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

A012499

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

Terms

    a(0) =1a(1) =-3a(2) =-35a(3) =1729a(4) =-12711a(5) =-5819099a(6) =581423349a(7) =26066838953

External references