Expansion of e.g.f. cos(tan(x)*sin(x)) (even powers only).

A009078

Expansion of e.g.f. cos(tan(x)*sin(x)) (even powers only).

Terms

    a(0) =1a(1) =0a(2) =-12a(3) =-120a(4) =-2352a(5) =-75840a(6) =-1649472a(7) =118634880a(8) =41344643328

External references