Expansion of e.g.f. cos(tan(x)*sinh(x)), even powers only.

A009079

Expansion of e.g.f. cos(tan(x)*sinh(x)), even powers only.

Terms

    a(0) =1a(1) =0a(2) =-12a(3) =-360a(4) =-11312a(5) =-342720a(6) =1391808a(7) =3011648640a(8) =712998408448

External references