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

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =6a(5) =25a(6) =110a(7) =721a(8) =6286a(9) =57625a(10) =541470a(11) =5558641a(12) =64351166a(13) =819480025a(14) =11140978030a(15) =160711583761