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

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =13a(5) =30a(6) =71a(7) =170a(8) =409a(9) =986a(10) =2379a(11) =5742a(12) =13861a(13) =33462a(14) =80783a(15) =195026a(16) =470833a(17) =1136690a(18) =2744211a(19) =6625110a(20) =15994429a(21) =38613966a(22) =93222359a(23) =225058682a(24) =543339721a(25) =1311738122a(26) =3166815963a(27) =7645370046a(28) =18457556053a(29) =44560482150