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

Terms

a(0) =1a(1) =-2a(2) =3a(3) =-1a(4) =-11a(5) =19a(6) =151a(7) =-799a(8) =-2295a(9) =37367a(10) =-16469a(11) =-2114531a(12) =9695533a(13) =132142451a(14) =-1556927553a(15) =-6822608311a(16) =234527654161a(17) =-360436983569