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

A012424

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

Terms

    a(0) =1a(1) =0a(2) =-12a(3) =360a(4) =-14000a(5) =826560a(6) =-74707776a(7) =9918004096

External references