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

A024271

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

Terms

    a(0) =0a(1) =1a(2) =6a(3) =59a(4) =940a(5) =31637a(6) =2005106a(7) =166100111a(8) =16050083800

External references