Expansion of (1-x)^(-1)/(1+2*x-x^2+x^3).

Terms

a(0) =1a(1) =-1a(2) =4a(3) =-9a(4) =24a(5) =-60a(6) =154a(7) =-391a(8) =997a(9) =-2538a(10) =6465a(11) =-16464a(12) =41932a(13) =-106792a(14) =271981a(15) =-692685a(16) =1764144a(17) =-4492953a(18) =11442736a(19) =-29142568a(20) =74220826a(21) =-189026955a(22) =481417305a(23) =-1226082390a(24) =3122609041a(25) =-7952717776a(26) =20254126984a(27) =-51583580784a(28) =131374006329a(29) =-334585720425