gp:[N,k,chi] = [11760,2,Mod(1,11760)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
         
     
    
    
        
        magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("11760.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
         
     
    
    
        
        sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(11760, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0, 0]))
N = Newforms(chi, 2, names="a") 
         
     
    
 Newform invariants 
    
    
    
        
        sage:traces = [1,0,-1,0,-1,0,0,0,1,0,5,0,5,0,1,0,4,0,-7,0,0,0,-1,0,1,0,-1,0,
0,0,-2,0,-5,0,0,0,1,0,-5,0,-5,0,-12,0,-1,0,-11,0,0,0,-4,0,-9,0,-5,0,7,
0,4,0,-4,0,0,0,-5,0,12,0,1,0,-2,0,-10,0,-1,0,0,0,12,0,1,0,-12,0,-4,0,0,
0,-14,0,0,0,2,0,7,0,8,0,5,0]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(None)] == traces)
         
     
    
    
        
        gp:f = lf[1] \\ Warning: the index may be different
         
     
    
  
    
    
    
        
        sage:f.q_expansion() # note that sage often uses an isomorphic number field
         
     
    
    
        
        gp:mfcoefs(f, 20)
         
     
    
    
   
  
    
      |  \( p \)  | 
      Sign
     | 
  
  
        
      |  \(2\)  | 
       \( -1 \) | 
    
        
      |  \(3\)  | 
       \( +1 \) | 
    
        
      |  \(5\)  | 
       \( +1 \) | 
    
        
      |  \(7\)  | 
       \( -1 \) | 
    
      
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.