Expansion of (1+8*x)/(1-x-81*x^2).

Terms

a(0) =1a(1) =9a(2) =90a(3) =819a(4) =8109a(5) =74448a(6) =731277a(7) =6761565a(8) =65995002a(9) =613681767a(10) =5959276929a(11) =55667500056a(12) =538368931305