Expansion of e.g.f. sinh(x)*sin(tan(x))/2, even powers only.

A024247

Expansion of e.g.f. sinh(x)*sin(tan(x))/2, even powers only.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =4a(4) =-1152a(5) =-91888a(6) =-7570624a(7) =-730713664a(8) =-83226398720

External references