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

A012020

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

Terms

    a(0) =1a(1) =-4a(2) =76a(3) =-3256a(4) =245008a(5) =-28441216a(6) =4700478784

External references