Expansion of e.g.f. sin(tanh(x)) (odd powers only).

A003717

Expansion of e.g.f. sin(tanh(x)) (odd powers only).

Terms

    a(0) =1a(1) =-3a(2) =37a(3) =-959a(4) =41641a(5) =-2693691a(6) =241586893a(7) =-28607094455

External references