Expansion of e.g.f. (1 - x)^(-x^3/6).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =4a(5) =10a(6) =40a(7) =210a(8) =1904a(9) =15120a(10) =132600a(11) =1293600a(12) =14303520a(13) =171531360a(14) =2223464880a(15) =31023392400a(16) =464541960960