Expansion of e.g.f. cosh(tan(x)*arcsin(x)) (only even powers).

A012384

Expansion of e.g.f. cosh(tan(x)*arcsin(x)) (only even powers).

Terms

    a(0) =1a(1) =0a(2) =12a(3) =360a(4) =17360a(5) =1310400a(6) =144530496a(7) =21954348416

External references