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

Terms

a(0) =1a(1) =1a(2) =-3a(3) =7a(4) =1a(5) =-219a(6) =2581a(7) =-22973a(8) =162177a(9) =-554039a(10) =-10506419a(11) =343049631a(12) =-6846400703a(13) =113528248237