Expansion of e.g.f. tan(sinh(x)*sin(x))/2 in odd powers of x^2.

A009687

Expansion of e.g.f. tan(sinh(x)*sin(x))/2 in odd powers of x^2.

Terms

    a(0) =1a(1) =116a(2) =221776a(3) =2035313216

External references