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

Terms

a(0) =1a(1) =4a(2) =19a(3) =106a(4) =685a(5) =5056a(6) =42079a(7) =390454a(8) =4000441a(9) =44881660a(10) =547457611a(11) =7215589954a(12) =102211815589