Expansion of e.g.f. 1/(exp(x) - x^4).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-1a(4) =25a(5) =-241a(6) =1441a(7) =-6721a(8) =67201a(9) =-1185409a(10) =16652161a(11) =-180639361a(12) =2098673281a(13) =-37526586241a(14) =785718950017