Expansion of e.g.f.: exp(x^3/3 + x^2/2).

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =3a(5) =20a(6) =55a(7) =210a(8) =1225a(9) =4760a(10) =26145a(11) =157850a(12) =811195a(13) =5345340a(14) =35170135a(15) =222472250a(16) =1650073425a(17) =12000388400a(18) =88563700225a(19) =720929459250