Expansion of e.g.f. exp( (exp(x^4) - 1)/x^3 ).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =61a(6) =361a(7) =1261a(8) =3361a(9) =68041a(10) =1073521a(11) =8343721a(12) =43290721a(13) =432509221a(14) =11472541081a(15) =165124339381