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

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-1a(4) =0a(5) =4a(6) =-8a(7) =13a(8) =-13a(9) =6a(10) =15a(11) =-48a(12) =88a(13) =-112a(14) =89a(15) =23a(16) =-246a(17) =559a(18) =-848a(19) =892a(20) =-376a(21) =-987a(22) =3243a(23) =-5874a(24) =7519a(25) =-5920a(26) =-1552a(27) =16544a(28) =-37455a(29) =56815