Expansion of c(x^2)*(1+x)/(1-x), c(x) the g.f. of A000108.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =13a(7) =18a(8) =32a(9) =46a(10) =88a(11) =130a(12) =262a(13) =394a(14) =823a(15) =1252a(16) =2682a(17) =4112a(18) =8974a(19) =13836a(20) =30632a(21) =47428a(22) =106214a(23) =165000a(24) =373012a(25) =581024a(26) =1323924a(27) =2066824a(28) =4741264a(29) =7415704