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

Terms

a(0) =1a(1) =3a(2) =7a(3) =17a(4) =39a(5) =85a(6) =183a(7) =389a(8) =815a(9) =1693a(10) =3495a(11) =7173a(12) =14655a(13) =29837a(14) =60567a(15) =122645a(16) =247855a(17) =500061a(18) =1007495a(19) =2027493a(20) =4076191a(21) =8188333a(22) =16437623a(23) =32978613a(24) =66132495a(25) =132562173a(26) =265628263a(27) =532110981a(28) =1065670783a(29) =2133798221