Label Dim. $$A$$ Field CM Traces A-L signs $q$-expansion
$$a_2$$ $$a_3$$ $$a_5$$ $$a_7$$ 2 3 11 13
6864.2.a.n $$1$$ $$54.809$$ $$\Q$$ None $$0$$ $$-1$$ $$2$$ $$0$$ $$+$$ $$+$$ $$-$$ $$-$$ $$q-q^{3}+2q^{5}+q^{9}+q^{11}+q^{13}-2q^{15}+\cdots$$
6864.2.a.be $$2$$ $$54.809$$ $$\Q(\sqrt{2})$$ None $$0$$ $$-2$$ $$0$$ $$4$$ $$+$$ $$+$$ $$-$$ $$-$$ $$q-q^{3}+\beta q^{5}+2q^{7}+q^{9}+q^{11}+q^{13}+\cdots$$
6864.2.a.bo $$3$$ $$54.809$$ 3.3.892.1 None $$0$$ $$-3$$ $$-1$$ $$-5$$ $$+$$ $$+$$ $$-$$ $$-$$ $$q-q^{3}-\beta _{1}q^{5}+(-2+\beta _{1}-\beta _{2})q^{7}+\cdots$$