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

Terms

a(0) =1a(1) =4a(2) =17a(3) =82a(4) =469a(5) =3176a(6) =24829a(7) =219262a(8) =2157257a(9) =23405644a(10) =277601161a(11) =3572553194a(12) =49576701277a(13) =737902011952