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

Terms

a(0) =1a(1) =17a(2) =117a(3) =525a(4) =1815a(5) =5247a(6) =13299a(7) =30459a(8) =64350a(9) =127270a(10) =238238a(11) =425646a(12) =730626a(13) =1211250a(14) =1947690a(15) =3048474a(16) =4657983a(17) =6965343a(18) =10214875a(19) =14718275a(20) =20868705a(21) =29156985a(22) =40190085a(23) =54712125a(24) =73628100a(25) =98030556a(26) =129229452a(27) =168785452