Expansion of e.g.f. sin(x)*sin(sin(x)) (even powers only).

A009546

Expansion of e.g.f. sin(x)*sin(sin(x)) (even powers only).

Terms

    a(0) =0a(1) =2a(2) =-12a(3) =118a(4) =-1816a(5) =37354a(6) =-974372a(7) =31769182a(8) =-1259350576a(9) =59073098706

External references