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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =10a(6) =65a(7) =350a(8) =1771a(9) =10290a(10) =86605a(11) =977350a(12) =11778041a(13) =138208070a(14) =1590920695a(15) =18895490250a(16) =245692484311