Expansion of e.g.f. exp(x^2 * (exp(x) - 1)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =6a(4) =12a(5) =20a(6) =390a(7) =2562a(8) =11816a(9) =105912a(10) =1063530a(11) =8815070a(12) =81342492a(13) =895185876a(14) =9971185406a(15) =112642410090