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

A013463

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

Terms

    a(0) =0a(1) =-4a(2) =0a(3) =-1440a(4) =17920a(5) =-7257600a(6) =395366400a(7) =-175791616000

External references