Expansion of e.g.f. 1/(2 - exp(x/(1 + x))).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =33a(7) =-83a(8) =955a(9) =-5243a(10) =44913a(11) =-285647a(12) =1672179a(13) =3544009a(14) =-352029311a(15) =9470312053a(16) =-208005703605