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

Terms

a(0) =2a(1) =3a(2) =6a(3) =13a(4) =30a(5) =71a(6) =170a(7) =409a(8) =986a(9) =2379a(10) =5742a(11) =13861a(12) =33462a(13) =80783a(14) =195026a(15) =470833a(16) =1136690a(17) =2744211a(18) =6625110a(19) =15994429a(20) =38613966a(21) =93222359a(22) =225058682a(23) =543339721a(24) =1311738122a(25) =3166815963a(26) =7645370046a(27) =18457556053a(28) =44560482150a(29) =107578520351