Expansion of e.g.f. arcsin(sec(x)*arcsinh(x)) (odd powers only).
A012823
Expansion of e.g.f. arcsin(sec(x)*arcsinh(x)) (odd powers only).
Terms
- a(0) =1a(1) =3a(2) =53a(3) =1855a(4) =156425a(5) =19537595a(6) =3987121981
External references
- oeis: A012823