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

Terms

a(0) =1a(1) =2a(2) =7a(3) =26a(4) =115a(5) =542a(6) =2809a(7) =15374a(8) =89737a(9) =548450a(10) =3519799a(11) =23493098a(12) =163139563a(13) =1172030654a(14) =8706504265a(15) =66638295998a(16) =525069283921