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

Terms

a(0) =0a(1) =9a(2) =17a(3) =72a(4) =209a(5) =711a(6) =2250a(7) =7357a(8) =23693a(9) =76848a(10) =248413a(11) =804307a(12) =2602122a(13) =8421705a(14) =27251521a(15) =88190472a(16) =285386041a(17) =923535567a(18) =2988612714a(19) =9671371877a(20) =31297187845a(21) =101279874144a(22) =327748481957