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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =24a(5) =240a(6) =1560a(7) =8400a(8) =81144a(9) =1638000a(10) =31058520a(11) =482499600a(12) =6905646264a(13) =114015261360