Expansion of e.g.f. exp(-3*x) / (1-x)^4.

Terms

a(0) =1a(1) =1a(2) =5a(3) =21a(4) =129a(5) =897a(6) =7317a(7) =67365a(8) =692577a(9) =7849953a(10) =97199109a(11) =1304688789a(12) =18863836065a(13) =292198665249