Expansion of e.g.f. arcsin(tan(x)) (odd powers only).

A012780

Expansion of e.g.f. arcsin(tan(x)) (odd powers only).

Terms

    a(0) =1a(1) =3a(2) =45a(3) =1743a(4) =133305a(5) =17089083a(6) =3302755365a(7) =896199578823

External references