Expansion of e.g.f. cosh(sin(x)*x), even powers only.

A009149

Expansion of e.g.f. cosh(sin(x)*x), even powers only.

Terms

    a(0) =1a(1) =0a(2) =12a(3) =-120a(4) =2576a(5) =-106560a(6) =4690752a(7) =-251957888a(8) =17894058240

External references