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

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =4a(5) =10a(6) =40a(7) =315a(8) =2296a(9) =15204a(10) =117720a(11) =1127445a(12) =11531740a(13) =120909646a(14) =1370809804a(15) =17111895255a(16) =227853866800