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

A296741

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

Terms

    a(0) =1a(1) =4a(2) =64a(3) =2752a(4) =237312a(5) =34390016a(6) =7512117248

External references