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

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =16a(5) =38a(6) =89a(7) =209a(8) =491a(9) =1153a(10) =2708a(11) =6360a(12) =14937a(13) =35081a(14) =82391a(15) =193503a(16) =454460a(17) =1067342a(18) =2506753a(19) =5887345a(20) =13826983a(21) =32473969a(22) =76268168a(23) =179122960a(24) =420687105a(25) =988023201a(26) =2320465339a(27) =5449830919a(28) =12799440072a(29) =30060687862