Expansion of -x * (x-1) * (3*x^2-1) / (9*x^4-8*x^3+4*x-1).

Terms

a(0) =1a(1) =3a(2) =9a(3) =31a(4) =109a(5) =391a(6) =1397a(7) =4995a(8) =17833a(9) =63675a(10) =227313a(11) =811543a(12) =2897269a(13) =10343647a(14) =36928061a(15) =131837979a(16) =470678161a(17) =1680380979a(18) =5999172633a(19) =21417807055a(20) =76464283837a(21) =272987183095a(22) =974598829637