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

Terms

a(0) =1a(1) =3a(2) =11a(3) =48a(4) =241a(5) =1358a(6) =8445a(7) =57256a(8) =419233a(9) =3290202a(10) =27507349a(11) =243731084a(12) =2278919697a(13) =22402234390a(14) =230781192301