Expansion of e.g.f. sin(sinh(x))/cos(x), odd powers only.

A009494

Expansion of e.g.f. sin(sinh(x))/cos(x), odd powers only.

Terms

    a(0) =1a(1) =3a(2) =17a(3) =203a(4) =5473a(5) =254067a(6) =16540721a(7) =1419027899a(8) =156472224961

External references