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

Terms

a(0) =1a(1) =0a(2) =1a(3) =5a(4) =26a(5) =169a(6) =1329a(7) =12088a(8) =124221a(9) =1422307a(10) =17947550a(11) =247318851a(12) =3693469273a(13) =59396067080