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

Terms

a(0) =1a(1) =-1a(2) =4a(3) =-10a(4) =27a(5) =-71a(6) =190a(7) =-504a(8) =1341a(9) =-3565a(10) =9480a(11) =-25206a(12) =67023a(13) =-178211a(14) =473858a(15) =-1259972a(16) =3350225a(17) =-8908137a(18) =23686444a(19) =-62981474a(20) =167465667a(21) =-445285695a(22) =1184000006a(23) =-3148217040a(24) =8371005477a(25) =-22258228005a(26) =59183895568a(27) =-157368030094a(28) =418436411767