E.g.f. tan(x)*sinh(x)/2 (even powers only).

A024272

E.g.f. tan(x)*sinh(x)/2 (even powers only).

Terms

    a(0) =0a(1) =1a(2) =6a(3) =71a(4) =1596a(5) =58141a(6) =3109986a(7) =229395011a(8) =22312837176

External references