Expansion of e.g.f. cos(sinh(sin(x))), even terms only.

A009054

Expansion of e.g.f. cos(sinh(sin(x))), even terms only.

Terms

    a(0) =1a(1) =-1a(2) =1a(3) =47a(4) =-895a(5) =31a(6) =1002497a(7) =-53580465a(8) =-8587007a(9) =305732208959

External references