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

Terms

a(0) =1a(1) =1a(2) =4a(3) =16a(4) =88a(5) =568a(6) =4288a(7) =36832a(8) =354688a(9) =3781504a(10) =44199424a(11) =561823744a(12) =7714272256a(13) =113769309184