Expansion of 1 + x/(1 - 2*x - x^3 + x^4).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =19a(6) =40a(7) =85a(8) =180a(9) =381a(10) =807a(11) =1709a(12) =3619a(13) =7664a(14) =16230a(15) =34370a(16) =72785a(17) =154136a(18) =326412a(19) =691239a(20) =1463829a(21) =3099934a(22) =6564695a(23) =13901980a(24) =29440065a(25) =62344891a(26) =132027067a(27) =279592219a(28) =592089264a(29) =1253860704