Expansion of e.g.f. tan(arcsin(arctan(x))) (odd powers only).

A012089

Expansion of e.g.f. tan(arcsin(arctan(x))) (odd powers only).

Terms

    a(0) =1a(1) =1a(2) =9a(3) =57a(4) =5169a(5) =-93807a(6) =31981689a(7) =-3857766903

External references