Expansion of e.g.f. (1 - x^3)^(1 + 1/x + 1/x^2).

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =-1a(4) =13a(5) =19a(6) =-29a(7) =251a(8) =281a(9) =-13033a(10) =56071a(11) =-28601a(12) =-10136411a(13) =57321419a(14) =-39757717a(15) =-17223709021a(16) =139901102641a(17) =-12418205969