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

Terms

a(0) =1a(1) =-1a(2) =3a(3) =-13a(4) =73a(5) =-521a(6) =4441a(7) =-44185a(8) =502545a(9) =-6429169a(10) =91393201a(11) =-1429101521a(12) =24378097129a(13) =-450504733849