Expansion of (1+2*x+x^2) / (1-6*x^2-4*x^3+2*x^4).

Terms

a(0) =1a(1) =2a(2) =7a(3) =16a(4) =48a(5) =120a(6) =338a(7) =880a(8) =2412a(9) =6392a(10) =17316a(11) =46240a(12) =124640a(13) =333920a(14) =898168a(15) =2409600a(16) =6475408a(17) =17382432a(18) =46694512a(19) =125377024a(20) =336745984a(21) =904275328a(22) =2428594976a(23) =6521881856a(24) =17515179200a(25) =47037120384a(26) =126321412672a(27) =339239675392a(28) =911046599168