E.g.f. tan(tan(x)/cosh(x)), odd powers only.

A009709

E.g.f. tan(tan(x)/cosh(x)), odd powers only.

Terms

    a(0) =1a(1) =1a(2) =17a(3) =593a(4) =19425a(5) =1598177a(6) =158823537a(7) =20206883505

External references