E.g.f. tanh(sin(x)*cos(x)) (odd powers only).

A009798

E.g.f. tanh(sin(x)*cos(x)) (odd powers only).

Terms

    a(0) =1a(1) =-6a(2) =112a(3) =-5488a(4) =451840a(5) =-57057792a(6) =10262228992

External references