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

Terms

a(0) =1a(1) =1a(2) =2a(3) =11a(4) =39a(5) =172a(6) =1163a(7) =6547a(8) =41772a(9) =335139a(10) =2486215a(11) =20078610a(12) =186139957a(13) =1676540257a(14) =16077206122a(15) =168739976555