Expansion of e.g.f. exp(x^3 * exp(-x)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =6a(4) =-24a(5) =60a(6) =240a(7) =-4830a(8) =39984a(9) =-180936a(10) =-605520a(11) =24616350a(12) =-318005160a(13) =2385790836a(14) =-86488584a(15) =-350543790870