Expansion of e.g.f. 1/(1 - x^2 - x^3)^x.

Terms

a(0) =1a(1) =0a(2) =0a(3) =6a(4) =24a(5) =60a(6) =1080a(7) =9240a(8) =80640a(9) =1058400a(10) =13759200a(11) =190935360a(12) =3053635200a(13) =51632380800a(14) =941283383040