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

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =48a(5) =360a(6) =2880a(7) =27720a(8) =322560a(9) =4173120a(10) =58665600a(11) =911433600a(12) =15567552000a(13) =287740252800