Expansion of e.g.f. arcsin(arctan(x)^2), even powers only.
A012458
Expansion of e.g.f. arcsin(arctan(x)^2), even powers only.
Terms
- a(0) =2a(1) =-16a(2) =488a(3) =-30336a(4) =3303072a(5) =-556926720a(6) =135234491520
External references
- oeis: A012458