Expansion of e.g.f. exp(arcsinh(x)*arctan(x)) (even powers only).

A012622

Expansion of e.g.f. exp(arcsinh(x)*arctan(x)) (even powers only).

Terms

    a(0) =1a(1) =2a(2) =0a(3) =-2a(4) =56a(5) =-2358a(6) =136092a(7) =-8379282a(8) =-86371632a(9) =375439810578

External references