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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =7a(6) =10a(7) =15a(8) =24a(9) =35a(10) =54a(11) =83a(12) =124a(13) =191a(14) =290a(15) =439a(16) =672a(17) =1019a(18) =1550a(19) =2363a(20) =3588a(21) =5463a(22) =8314a(23) =12639a(24) =19240a(25) =29267a(26) =44518a(27) =67747a(28) =103052a(29) =156783