E.g.f. exp(x*tan(x)) (even powers only).

A009252

E.g.f. exp(x*tan(x)) (even powers only).

Terms

    a(0) =1a(1) =2a(2) =20a(3) =456a(4) =18192a(5) =1111840a(6) =96035136a(7) =11101474944

External references