
// Make newform 8046.2.a.f in Magma, downloaded from the LMFDB on 18 May 2024.
// To make the character of type GrpDrchElt, type "MakeCharacter_8046_a();"
// To make the coeffs of the qexp of the newform in the Hecke field type "qexpCoeffs();"
// To make the newform (type ModFrm), type "MakeNewformModFrm_8046_2_a_f();".
// This may take a long time!  To see verbose output, uncomment the SetVerbose lines below.
// The precision argument determines an initial guess on how many Fourier coefficients to use.
// This guess is increased enough to uniquely determine the newform.
// To make the Hecke irreducible modular symbols subspace (type ModSym)
// containing the newform, type "MakeNewformModSym_8046_2_a_f();".
// This may take a long time!  To see verbose output, uncomment the SetVerbose line below.
// The default sign is -1.  You can change this with the optional parameter "sign".
function ConvertToHeckeField(input: pass_field := false, Kf := [])
    if not pass_field then
        poly := [9, 36, -81, -18, 71, -2, -17, 0, 1];
        Kf := NumberField(Polynomial([elt : elt in poly]));
        AssignNames(~Kf, ["nu"]);
    end if;
    Rf_num := [[1, 0, 0, 0, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0, 0, 0], [12, 63, -18, -71, 5, 17, 0, -1], [-9, -21, 64, 25, -33, -14, 2, 1], [-18, -75, 55, 93, -35, -31, 2, 2], [-12, 75, -49, -93, 35, 31, -2, -2], [-3, 144, -35, -137, 21, 34, -1, -2], [-48, -213, 192, 247, -103, -79, 6, 5]];
    Rf_basisdens := [1, 1, 6, 6, 6, 6, 6, 6];
    Rf_basisnums := ChangeUniverse([[z : z in elt] : elt in Rf_num], Kf);
    Rfbasis := [Rf_basisnums[i]/Rf_basisdens[i] : i in [1..Degree(Kf)]];
    inp_vec := Vector(Rfbasis)*ChangeRing(Transpose(Matrix([[elt : elt in row] : row in input])),Kf);
    return Eltseq(inp_vec);
end function;


// To make the character of type GrpDrchElt, type "MakeCharacter_8046_a();"
function MakeCharacter_8046_a()
    N := 8046;
    order := 1;
    char_gens := [299, 3727];
    v := [1, 1];
    // chi(gens[i]) = zeta^v[i]
    assert UnitGenerators(DirichletGroup(N)) eq char_gens;
    F := CyclotomicField(order);
    chi := DirichletCharacterFromValuesOnUnitGenerators(DirichletGroup(N,F),[F|F.1^e:e in v]);
    return MinimalBaseRingCharacter(chi);
end function;

function MakeCharacter_8046_a_Hecke(Kf)
    return MakeCharacter_8046_a();
end function;


function ExtendMultiplicatively(weight, aps, character)
    prec := NextPrime(NthPrime(#aps)) - 1; // we will able to figure out a_0 ... a_prec
    primes := PrimesUpTo(prec);
    prime_powers := primes;
    assert #primes eq #aps;
    log_prec := Floor(Log(prec)/Log(2)); // prec < 2^(log_prec+1)
    F := Universe(aps);
    FXY<X, Y> := PolynomialRing(F, 2);
    // 1/(1 - a_p T + p^(weight - 1) * char(p) T^2) = 1 + a_p T + a_{p^2} T^2 + ...
    R<T> := PowerSeriesRing(FXY : Precision := log_prec + 1);
    recursion := Coefficients(1/(1 - X*T + Y*T^2));
    coeffs := [F!0: i in [1..(prec+1)]];
    coeffs[1] := 1; //a_1
    for i := 1 to #primes do
        p := primes[i];
        coeffs[p] := aps[i];
        b := p^(weight - 1) * F!character(p);
        r := 2;
        p_power := p * p;
        //deals with powers of p
        while p_power le prec do
            Append(~prime_powers, p_power);
            coeffs[p_power] := Evaluate(recursion[r + 1], [aps[i], b]);
            p_power *:= p;
            r +:= 1;
        end while;    
    end for;
    Sort(~prime_powers);
    for pp in prime_powers do
        for k := 1 to Floor(prec/pp) do
            if GCD(k, pp) eq 1 then
                coeffs[pp*k] := coeffs[pp]*coeffs[k];
            end if;
        end for;
    end for;
    return coeffs;
end function;


function qexpCoeffs()
    // To make the coeffs of the qexp of the newform in the Hecke field type "qexpCoeffs();"
    weight := 2;
    raw_aps := [[1, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0], [0, -1, 0, 0, 0, 0, 0, 0], [-1, 0, 0, 0, 0, -1, 0, 0], [-1, 0, 0, 0, 0, 0, 1, 0], [-1, 1, 0, 0, -1, 1, 0, 0], [1, 1, 0, -1, 0, 0, 0, 0], [-1, 0, 0, 1, 1, 1, -1, -1], [-3, 0, -1, 1, 0, 0, 0, 1], [0, 1, 1, 0, 0, 0, -2, 0], [-1, 0, 0, -1, 0, -1, 1, 2], [0, 0, 0, -1, 0, -1, -1, -1], [0, 0, 2, -1, 0, 1, -1, -1], [-2, 0, 0, 0, -1, 1, 1, 2], [-3, 0, -2, 0, 0, 0, 0, 1], [0, 2, 1, 0, -1, 1, -1, -2], [0, 2, 1, 2, 2, -1, -2, -2], [-3, -2, 2, -1, -3, 1, 1, 0], [-2, 1, -1, 1, 2, -1, 2, -1], [-1, 0, -1, -1, -2, 1, 0, 2], [0, -1, 0, 0, 3, 0, 0, -1], [-4, 0, -3, 2, 1, 1, 1, 0], [-3, -1, -1, 1, 0, -2, 1, 1], [4, 3, -3, 3, 3, 1, -1, -2], [-1, -3, 0, -1, -1, 2, 1, 1], [-4, -1, 0, -2, -3, 0, 2, 3], [-3, 0, -5, 2, 1, 2, 1, -1], [-3, 0, 4, -3, 0, -1, 0, 0], [-1, -1, 0, 3, -1, 3, 0, 0], [0, 1, 0, 0, 2, -3, 1, -2], [-1, -2, 3, 1, 0, 2, -3, 0], [-3, -2, -1, -3, -1, -4, 6, 3], [-1, 0, -2, 1, 2, 1, -1, -3], [-8, 2, 2, 0, -2, -3, 0, -2], [1, 0, 0, 0, 0, 0, 0, 0], [-6, 0, 0, 1, -2, 3, -1, 0], [-3, 0, 0, 3, 0, 1, -2, 3], [1, -2, -1, -3, 0, -1, 3, 1], [-2, 4, 5, 0, -1, -1, 0, -1], [2, 3, 0, 3, -1, 2, -2, -4], [-2, -1, -3, 6, 0, 5, 0, -2], [3, -4, -3, -3, 3, -4, 0, 0], [5, -2, 1, -2, 6, -3, -1, -1], [-5, -3, 2, -2, 0, -2, -2, 0], [3, 0, 0, 2, -1, 0, 2, 1], [-6, -1, 1, -4, -2, -4, 2, 5], [-14, 1, 1, -1, 0, -1, 2, -4], [0, -5, 2, -1, 1, -2, 0, 2], [-6, -2, 4, 2, -3, 4, 0, 1], [-3, 4, 1, 2, 3, 0, -3, -4], [8, -2, 4, -2, 0, -2, 0, 5], [-2, -3, -5, -3, 1, -4, 3, 2], [-2, 1, -1, 2, 5, -4, -1, -4], [1, -2, -7, 4, 0, 4, 1, 3], [7, -2, 1, 2, -1, 3, 0, 1], [5, -2, 1, -2, 3, -2, -2, -2], [-6, 0, 0, 1, 2, -5, 3, -2], [-3, 0, 1, -1, -3, -3, 3, 0], [6, -5, -3, 3, 1, 3, 0, 0], [-1, -4, -2, -2, -1, 1, 5, 1], [-4, 1, 5, -2, 3, -4, 0, -2], [-2, -1, 1, 3, -1, 3, -2, 5], [3, -1, -2, 5, -1, 1, -1, 0], [5, -2, 0, 0, -4, -4, -1, 3], [3, -1, -2, 1, 4, 2, 3, 0], [-4, 1, 1, 1, -3, 2, -2, -1], [-2, -3, 2, -7, -1, -4, 0, 2], [-12, -2, 2, -3, 0, -3, 1, 3], [6, -4, -2, -1, 5, -1, -2, -3], [-13, -5, 3, -1, -4, 0, 0, 2], [0, -5, -1, 1, 3, 3, 1, -4], [5, -1, -2, 2, 4, 3, 2, -1], [-4, 1, -1, -2, -1, -2, -1, 2], [-5, 7, 3, 2, 3, 3, -8, -3], [1, 1, 3, -1, -3, 1, -5, -1], [2, -1, 2, -6, -3, -9, 4, 4], [-6, -3, 3, 0, -8, 5, 0, 2], [5, 4, 5, 1, 5, -3, -3, -5], [12, 2, -1, 2, -1, 2, -1, 1], [1, 1, -10, 6, 3, 2, -1, -1], [4, -2, 4, 0, -4, 5, -8, -2], [0, -4, -3, 4, 3, -4, 3, -1], [8, 10, 3, 0, 4, -2, -3, -9], [11, 6, 6, -3, -1, 4, -3, -6], [-9, 0, 1, -3, -3, -3, 3, 7], [-10, -6, -3, -2, -1, 2, 2, 3], [1, -5, -2, -1, 0, -4, -2, 2], [3, 3, 7, -3, -6, 4, -1, 1], [5, 6, -1, -1, -1, 6, 0, 0], [2, 4, 1, -3, 2, 3, -6, -6], [6, -2, 0, -1, 3, 9, -2, -1], [-4, 5, -3, -3, 2, -6, -1, 1], [5, -2, 1, -6, -2, 1, 1, 0], [8, 5, 4, 1, -3, -1, -2, -5], [-4, 2, -1, -7, -5, 1, 4, 4], [-4, -1, 3, -3, -5, -4, 1, 7], [10, 6, 2, 1, 7, 0, -5, -5], [13, 4, 3, 0, -2, 0, 1, 1], [13, 4, 0, 1, 1, -3, -1, -4], [-7, 3, -7, 6, -8, 5, 1, 8], [3, 7, 4, 0, -2, 5, -5, -3], [6, 6, 1, -3, -3, -3, 0, -2], [-1, 0, -6, 5, -6, 3, 6, -1], [-6, -2, 5, 5, 0, 0, -6, -7], [-16, -3, 2, -2, -3, -2, 4, 4], [13, 0, -4, -2, 5, -3, 0, -1], [-8, 9, -1, -1, 1, 0, -3, -2], [-2, 0, 4, -6, -7, 1, 4, 0], [-1, -1, 2, -1, -6, -6, 1, 5], [-6, -7, -1, -7, -1, -1, 2, 2], [0, 1, -1, -5, 2, -7, 10, 6], [-6, -5, 6, -2, -3, -1, 6, 3], [13, -6, -1, 0, 3, 2, 2, 3], [-4, 3, -10, -6, -2, 0, 5, 9], [1, 9, 2, 5, 4, -2, -9, 1], [-2, -3, 2, 0, 5, -1, 2, -1], [2, -1, -2, 3, -4, 10, -4, 0], [-2, 0, -6, 1, 1, -3, 7, 4], [9, 2, -3, 4, 5, 3, -4, 0], [4, 8, -1, 4, 5, 4, -6, -7], [2, 3, 4, 8, 6, 7, -6, -5], [-23, 0, 4, 5, -3, -2, -5, -1], [-7, 0, 3, -2, 1, -1, 0, 3], [-5, -5, 3, -8, -4, 5, 2, -2], [7, 6, -4, 3, 5, 5, -3, -5], [4, -3, -7, 6, 0, 5, 2, -2], [-2, -6, 5, -3, -6, -5, 4, -1], [-1, -9, -3, -2, -2, 1, 6, 9], [-1, 5, 3, -1, 2, -2, -4, 1], [-6, -5, -1, -3, -3, -8, 6, 6], [0, 0, 0, 4, 4, 3, 1, -3], [-3, 4, -1, 2, -8, 2, 4, 3], [-3, 2, 10, -4, 2, -3, -5, -1], [2, -4, 4, -4, -3, 3, 2, -1], [3, -1, -1, 2, -7, 5, 2, -4], [-18, -1, 4, -3, -5, 2, 1, 2], [15, 2, -1, 3, 9, -5, 1, 0], [-6, -8, -6, -3, -3, -1, 7, 4], [0, -5, 0, 7, 0, 12, -2, 0], [8, -3, -1, -3, 4, -5, 2, -5], [-4, -5, 0, 3, 2, -8, 8, -1], [7, 0, -3, -7, 0, -5, 3, 7], [0, 1, -7, 7, 10, -7, 0, 1], [-4, -3, 11, -1, -8, -4, -2, 1], [6, 2, 1, 5, -3, 0, -7, -4], [-3, -3, 5, -2, -5, -3, 1, 7], [-2, -9, 8, 2, 4, -4, -1, -10], [-1, 12, 2, -2, 2, -6, -4, 0], [-2, 11, 4, -1, -1, 5, -9, -5], [7, 7, -2, 4, 8, 1, -7, -6], [6, 0, -10, 5, 4, 4, -2, 2], [19, -9, 2, -2, 0, -9, 1, 4], [-3, -14, -10, 1, 1, -1, 10, 10], [16, 10, 2, 1, 6, 2, -4, -15], [0, 8, -2, -4, -2, -1, 2, -6], [-1, 0, 6, -2, -8, 5, -7, 1], [-2, 3, -10, 0, 4, -4, 2, 6], [0, -5, 3, -3, -6, -3, 3, 2], [14, 0, -10, -1, 4, -6, -1, 3], [8, 2, -2, -5, 0, 0, -3, 3], [-2, -7, 1, -8, -9, 2, 4, 6], [14, 4, -3, 4, 3, 6, -11, -2], [-8, 5, -1, 5, -2, 8, -3, -2], [-2, 3, -7, -1, -4, 0, 0, 5], [7, 0, -5, -1, 0, -2, 2, -3], [5, 5, -8, 3, 10, 3, -2, -3], [3, -16, 2, 4, 2, 0, -4, -1], [-15, -6, 8, 1, -6, -1, 1, 6], [0, 3, -4, 0, 7, -7, 9, 6], [-6, -10, 2, 0, -1, -8, 5, -2], [8, 2, -3, -8, -3, -5, 7, 6], [-7, -3, -1, -9, 6, -6, 1, 8], [-1, 4, -8, 2, -8, 0, 7, 6], [-3, 12, -2, 5, 0, 4, -8, 0], [-5, 7, -1, 0, -7, -1, 0, -4], [13, -5, 5, 2, -1, 8, 1, -4], [-24, -5, -10, -2, -3, -7, 6, 10], [22, 0, 1, 4, 1, 13, -10, 0], [9, 3, 2, 4, -8, -2, 3, 4], [0, -9, 0, 1, 4, -2, 2, 8], [1, 5, -10, 7, -3, 3, 9, -3], [-4, -3, 6, 5, -2, 5, -5, -6], [-17, -3, -8, 7, -7, -1, 1, 10], [15, -8, -2, 5, 11, 2, -2, 3], [-14, 7, -8, 7, -1, 2, -2, 7], [6, 6, -11, 9, 13, -4, -3, -2], [3, -5, 7, 4, -3, -2, -9, -1], [-7, 2, 2, -5, -3, 3, 1, 7], [-6, 9, 8, -8, -4, -1, -1, -7], [-17, 2, 8, 4, -5, 5, -3, -5], [18, -3, -4, -6, -4, -3, 9, -1], [-6, -8, -6, 6, 10, -7, -2, 0], [0, -6, 1, -13, -14, -10, 11, 11], [-2, 4, 6, 1, -11, -2, 0, -2], [-24, 2, 3, -5, 2, -9, 7, 4], [-4, -4, -3, -12, -4, -16, 13, 6], [-6, -7, 6, -6, -6, 4, 3, 2], [-5, -2, 3, -6, 3, -1, 1, 2], [2, -9, -9, 5, 3, 1, -2, -2], [-12, -3, -8, 8, 1, -5, 8, -4], [-1, -1, 9, 4, 8, 1, -10, -2], [13, 10, -6, 12, 8, 8, -11, -7], [-1, 2, 0, -7, -4, -4, 4, 0], [10, 2, -8, 10, 9, -2, -8, -4], [7, 5, 8, -7, -7, -5, -5, -3], [8, -11, -3, 6, -7, 10, 3, -5], [0, -4, 5, 2, -9, 9, -2, -5], [3, -13, -2, -10, 6, -6, -2, -4], [7, -8, -3, 1, 3, -4, 1, 4], [-3, 8, -9, 5, 2, 8, 4, -2], [12, -5, 1, 10, 4, 6, -4, -9], [-14, -1, -9, 6, -5, -1, 8, 9], [-4, 9, 5, -3, -4, -7, -5, 1], [-10, 3, 2, 10, -6, 4, -9, -6], [-1, -5, 3, -11, -5, 1, -4, 6], [-10, 16, 3, -4, 0, -4, 5, -5], [6, -10, -9, -3, -3, 1, 5, 4], [2, -4, 1, -1, 9, -8, 2, 2], [-2, -3, -8, 1, 6, -10, -2, -4], [-19, 0, 0, 5, -6, 8, 0, -1], [7, 10, -1, 6, 6, 3, 0, -13], [1, 3, 2, -7, -3, -3, -8, 1], [-4, 2, 7, -7, -11, -6, -1, 1], [18, -8, -3, -5, -6, 1, 8, 7], [9, 2, 5, -4, 15, -9, -2, -11], [-5, 17, 1, -5, 1, 2, 4, -3], [-15, 3, 6, 5, -1, -2, -4, 5], [-5, -11, 9, -2, -5, 0, -10, 7], [32, -3, 7, -4, 8, 4, -5, -14], [-1, 6, -7, 3, -3, 1, 10, 7], [-13, 3, -7, 5, 3, -5, 12, 5], [-4, -7, -11, 9, -1, 4, 6, 11], [-10, -8, 6, -4, -1, 4, 2, -1], [-2, -7, 2, -10, 2, -4, 14, 10], [11, -10, 14, -8, -4, -10, 1, 1], [-29, 4, -4, 10, 14, 6, -2, -4], [8, -4, 2, -7, -6, 2, 6, 7], [15, -6, -7, -6, -8, -2, 13, 9], [-10, -10, -11, 0, 9, -7, 5, 4], [-3, 4, -2, 4, 1, 1, -6, -5], [-20, -11, 6, 4, -6, 11, 1, 4], [3, -7, -3, 6, 9, -4, -2, 4], [9, -2, -4, -7, -3, -5, -5, 5], [18, 3, 12, -3, -2, 8, -11, -2], [9, -5, -5, 4, -4, 7, 5, 6], [-18, -6, -2, -3, -2, 8, 5, -1], [8, -8, -2, 0, 1, 0, -4, 2], [-23, 3, 2, -7, 3, -11, 2, 13], [-7, -20, 0, 6, -2, 11, -2, 9], [7, -5, 12, -13, -3, -16, 1, 8], [-6, 2, -2, 8, 6, 6, 0, 0], [-6, -10, -2, 0, 2, -10, 9, 9], [-12, -5, -1, -5, -4, 1, 3, 5], [37, 2, 1, -6, 1, 8, -9, 0], [-6, -9, 2, 1, -6, -2, 10, 11], [-15, 9, 0, 1, -10, 5, -1, -14], [12, -3, -2, -12, -10, -6, 13, 4], [-3, -9, -1, 7, -10, 19, -1, -6], [-3, 1, 8, 1, 4, -7, -4, 0], [-5, 0, 2, -1, -13, -4, 5, 15], [14, 7, -10, 8, 2, 5, -6, -6], [8, -5, 0, 8, 8, 12, -9, -10], [15, -8, 0, 0, -2, 9, 7, -6], [13, 0, 9, -2, 1, 4, -12, -11], [13, -4, 10, -11, -7, 0, -4, -5], [14, -10, 6, 4, 7, -10, -2, -8], [0, -2, 8, 10, -2, 1, -9, -13], [17, 3, -6, 1, 7, 12, -2, 0], [2, 0, 0, 0, 0, -8, -1, 0], [1, -10, 2, -10, 9, -10, 16, 5], [13, 7, 2, 4, -1, 8, -12, 4], [11, -11, -4, 0, -12, 5, -2, 13], [13, -4, 5, -5, -2, 9, -9, 1], [-7, -4, 3, -11, 4, 4, 3, 7], [-8, -5, -9, 6, -5, -7, 15, 9], [3, 6, -3, 3, -3, 15, -1, 9], [-21, -1, -5, -10, -4, 2, 9, 6], [18, -4, 6, -6, 10, 0, 1, -9], [-14, 12, 3, 6, 4, 2, -8, -6], [-15, 8, -2, -10, -7, 10, 1, 3], [-3, -9, -2, 2, -1, 16, -3, -3], [14, -9, -6, 5, 1, -1, -1, 10], [-4, 11, 5, -7, 2, -2, -2, -10], [-26, -3, -1, 4, 2, 2, 7, -8], [6, -5, 3, 6, -3, -3, -9, -11], [11, -10, 1, 2, 1, -6, 10, 2], [27, 3, -4, -4, 12, 5, -1, -13], [-1, 2, 14, 3, -9, 15, -1, -6], [13, 7, 2, 5, -3, 1, 6, 2], [9, 11, -5, 7, 6, 14, -8, -11], [-14, -3, 8, -6, -5, -11, 2, 9], [10, 1, -14, -2, 2, 4, 7, 8], [-20, 0, -6, 7, -10, 3, 4, 15], [-1, -1, 2, 5, 1, 7, -17, -11], [-1, 8, 4, 2, -5, 1, -5, 1], [-3, 10, 4, -3, -8, 2, 3, 2], [1, 4, -1, 2, -2, -2, -5, -3], [-15, -5, 2, 1, -1, -2, 10, 12], [0, 14, 11, 1, 6, -1, -5, -5], [16, 9, -7, 1, 8, 4, 7, -6], [15, -2, 2, -14, -8, -15, 10, 5], [-16, -2, 4, 4, -12, 6, 5, 0], [-18, 2, -7, 2, 9, -7, 5, -1], [-9, -11, 4, -11, -2, -10, 11, 11], [10, -9, -9, 8, -4, 2, -5, 10], [-10, 12, -1, 7, -1, 4, -2, 12], [-24, -2, 12, -3, -13, -1, 2, -2], [16, 19, 7, -7, 4, 3, -4, -16], [-4, 12, 11, 6, 10, -1, -17, -14], [25, 0, 9, -2, 7, -6, -2, -14], [-2, -9, 8, -4, 4, 2, -4, -4], [7, 23, -2, -7, -4, 4, 1, 3], [-2, -2, -18, 4, -4, 3, 2, 5], [-28, -7, 6, 4, -8, -3, 7, -4], [3, 7, -19, 13, 9, 5, -2, 2], [-5, 2, -1, 2, 4, 15, 2, -9], [-14, -12, -2, -8, -8, -1, 9, 13], [4, 6, -3, 4, 6, 15, -9, -6], [8, 7, -5, 6, -3, 6, -14, -4], [-29, -7, -2, -8, 6, -17, 5, 4], [-31, 2, 6, 10, -9, 4, -3, 10], [-7, 2, -15, 11, 12, -2, 8, 1], [29, 14, 6, 4, 3, 14, -22, -10], [4, 3, -5, 0, -7, 1, 15, 5], [-1, -2, -10, -2, 5, -19, 9, -6], [-16, 8, -10, -1, -2, 0, 7, 5], [-27, -3, 8, -1, -1, -11, -3, 2], [1, 1, 4, -11, -8, -6, 21, 15], [-2, 1, -9, 1, -5, 20, -2, 1], [13, 3, -1, 5, -1, 5, 7, 5], [12, 17, 8, 3, -1, 6, -2, -4], [-22, -1, -4, 13, 14, -4, -13, -13], [-12, -17, 6, -15, -15, -10, 5, 18], [-2, 18, -2, 14, 1, 15, -9, -3], [16, 3, 0, -8, -2, -9, 3, -10], [7, 1, 12, 5, 12, -2, -12, -13], [-3, 6, 6, 6, 17, -1, -12, -7], [17, 16, 1, 2, -8, 8, -5, 0], [7, 14, 9, -13, -5, 8, -2, -4], [-6, 14, 10, 12, 2, 1, -8, -4], [26, 5, -8, 1, 4, 1, -6, 0], [-8, -5, 14, -10, 5, 7, -12, 0], [-1, -4, -9, -2, -9, 2, 5, 11], [0, 11, -16, 8, 3, 11, -2, 1], [5, -13, -8, 3, 3, -6, -5, 1], [-6, 1, 5, -11, -3, -2, -1, 16], [-21, -5, -10, 5, -3, -11, 15, 6], [-17, -2, -13, -7, -4, -14, 13, 6], [3, -5, 1, 15, 17, 8, -11, -9], [-28, -8, -11, 6, 5, -6, 9, -2], [29, 0, 0, -6, 6, -15, 9, -3], [3, 5, -12, 8, 2, -2, 7, -7], [-23, 10, -2, -6, 3, 13, -8, -5], [10, 12, 7, -10, 8, -10, -2, -15], [-10, -18, -6, 5, 10, 11, -3, -3], [-16, -3, 7, 0, -7, 3, -4, -12], [-10, -8, -15, 14, 4, -6, -2, 2], [11, 17, -4, 5, 10, -10, -9, 0], [12, 21, -2, 1, -1, -13, 3, 1], [11, -1, 11, -4, -10, 13, 4, 3], [1, 11, 0, 5, 8, -1, -5, -19], [9, 9, 3, -6, 3, -10, -6, -12], [-16, 7, 8, 2, 8, 3, 5, -5], [-18, -8, 1, -5, 6, -22, -1, 6], [1, 1, -2, 7, 3, -8, -3, 1], [-13, 19, 10, 5, -8, 12, -17, -12], [17, -7, -4, 6, 8, 10, 5, -6], [0, 15, 8, -9, -10, 6, -5, -4], [-1, -7, 13, -9, -1, -11, -5, 15], [-22, -3, -5, 2, 2, -3, 10, 0], [2, -18, -6, 6, 3, 17, -3, 1], [-7, 10, 4, 13, -2, 22, -5, -2], [17, -4, 3, 13, 6, 5, -5, -17], [26, 17, -5, 6, 20, 6, -17, -29], [-30, 9, -4, -1, 10, -17, -5, -3], [-2, 16, 4, -5, 6, -18, 9, 1], [13, -9, 8, -4, 5, 6, -16, -10], [-14, 3, 15, 5, 7, -4, -11, -7], [0, 8, -11, -2, -13, -8, 12, 2], [3, 19, -2, 2, -2, 0, 0, 0], [-19, -5, 0, -1, 4, -11, -1, -7], [2, 12, 10, -11, 1, -8, 6, -1], [-24, 0, -2, -8, -1, -6, 2, 13], [-27, 1, 0, 6, 9, -6, -14, -5], [-3, 18, 6, 10, -1, 16, -4, -10], [5, 12, -3, 2, 10, 17, -2, -12], [-25, 0, 13, -3, -9, -5, -5, -3], [-4, 12, 16, -13, 8, -9, -1, -4], [1, 0, 5, -4, -7, 10, 12, 3], [-12, 10, 7, -16, -2, -12, 3, 7], [6, 6, 9, 3, -9, -1, 4, 6], [5, -6, 4, -9, 5, -5, -5, -10], [-11, -4, 2, -11, 8, -3, 13, 10], [14, 16, 0, -7, 5, -12, 9, 2], [-2, -13, -9, 7, 3, -5, -4, 4], [-5, -18, 2, -8, 3, -2, 2, -8], [-16, 6, 1, -4, 4, -1, 9, -9], [17, 2, 4, 0, 11, 6, -5, -8], [-8, -4, 2, -18, -5, -3, 11, 6], [-27, -8, -2, 8, 11, -5, -4, -15], [0, -4, 27, -5, -7, 2, -5, 5], [18, -6, 2, 11, 6, 14, -1, 3], [4, -3, -14, 17, 4, 19, -6, -7], [13, 8, 3, -15, -8, -4, -6, 14], [20, 7, -20, 19, -5, 9, 7, 1], [-8, 18, -14, 5, 5, 8, 4, -4], [2, 10, -5, 1, 10, -1, -6, -12], [2, 0, 11, -1, 1, -25, 2, 5], [14, 7, 1, 8, 9, 0, -7, 8], [-24, -5, 1, -17, -13, 3, 2, 8], [-13, 17, 6, -10, 1, -4, -5, -1], [3, 8, -10, 16, 15, 15, -9, -18], [1, -21, -7, -13, -8, -17, 25, 14], [-15, -1, 8, -3, -14, 12, -9, -4], [35, -1, 0, 4, 1, 20, -16, 4], [-11, -7, 13, -4, -20, 20, -1, -1], [-22, -3, -2, -1, -2, -14, 10, 9], [4, 3, -3, -1, -14, 15, 8, -4], [26, -4, -1, 2, -4, 11, -7, -8], [10, 0, -2, -9, -2, 3, 19, 3], [-14, 1, -4, 4, 3, 4, 2, 0], [8, 3, -11, -9, -2, -11, -3, 2], [-26, 7, -1, 7, 3, -3, -16, -16], [-30, -5, -11, 1, -2, -16, 15, 2], [28, -6, 2, 13, 8, -9, -4, 2], [-20, -6, -6, -3, -6, -2, 17, 13], [22, 6, -2, 4, 12, 4, -15, -5], [9, 13, 0, 0, 16, -5, -5, -21], [-8, -20, -1, -8, -7, 10, 2, -2], [-17, -6, 0, -14, 3, -29, 13, 5]];
    aps := ConvertToHeckeField(raw_aps);
    chi := MakeCharacter_8046_a_Hecke(Universe(aps));
    return ExtendMultiplicatively(weight, aps, chi);
end function;


// To make the newform (type ModFrm), type "MakeNewformModFrm_8046_2_a_f();".
// This may take a long time!  To see verbose output, uncomment the SetVerbose lines below.
// The precision argument determines an initial guess on how many Fourier coefficients to use.
// This guess is increased enough to uniquely determine the newform.
function MakeNewformModFrm_8046_2_a_f(:prec:=8)
    chi := MakeCharacter_8046_a();
    f_vec := qexpCoeffs();
    Kf := Universe(f_vec);
    // SetVerbose("ModularForms", true);
    // SetVerbose("ModularSymbols", true);
    S := CuspidalSubspace(ModularForms(chi, 2));
    S := BaseChange(S, Kf);
    maxprec := NextPrime(2999) - 1;
    while true do
        trunc_vec := Vector(Kf, [0] cat [f_vec[i]: i in [1..prec]]);
        B := Basis(S, prec + 1);
        S_basismat := Matrix([AbsEltseq(g): g in B]);
        if Rank(S_basismat) eq Min(NumberOfRows(S_basismat), NumberOfColumns(S_basismat)) then
            S_basismat := ChangeRing(S_basismat,Kf);
            f_lincom := Solution(S_basismat,trunc_vec);
            f := &+[f_lincom[i]*Basis(S)[i] : i in [1..#Basis(S)]];
            return f;
        end if;
        error if prec eq maxprec, "Unable to distinguish newform within newspace";
        prec := Min(Ceiling(1.25 * prec), maxprec);
    end while;
end function;


// To make the Hecke irreducible modular symbols subspace (type ModSym)
// containing the newform, type "MakeNewformModSym_8046_2_a_f();".
// This may take a long time!  To see verbose output, uncomment the SetVerbose line below.
// The default sign is -1.  You can change this with the optional parameter "sign".
function MakeNewformModSym_8046_2_a_f( : sign := -1)
    R<x> := PolynomialRing(Rationals());
    chi := MakeCharacter_8046_a();
    // SetVerbose("ModularSymbols", true);
    Snew := NewSubspace(CuspidalSubspace(ModularSymbols(chi,2,sign)));
    Vf := Kernel([<5,R![9, -36, -81, 18, 71, 2, -17, 0, 1]>,<11,R![-49, -64, 213, 239, -122, -142, -19, 6, 1]>],Snew);
    return Vf;
end function;