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

Terms

a(0) =1a(1) =0a(2) =0a(3) =6a(4) =36a(5) =150a(6) =1260a(7) =16926a(8) =197316a(9) =2286150a(10) =32821020a(11) =548528046a(12) =9515702196a(13) =174531124950