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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =24a(5) =180a(6) =960a(7) =8820a(8) =108864a(9) =1632960a(10) =23954400a(11) =384199200a(12) =6861697920a(13) =135022567680