E.g.f. tan(sin(x))*sin(x) (even powers only).

A009665

E.g.f. tan(sin(x))*sin(x) (even powers only).

Terms

    a(0) =0a(1) =2a(2) =0a(3) =-32a(4) =-640a(5) =1024a(6) =661504a(7) =25305088a(8) =-948699136a(9) =-216606572544

External references