Expansion of F(x) where F(x) = 1 + x / (1 - x * F(x) * F(-x^2) ).

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =13a(7) =29a(8) =65a(9) =151a(10) =359a(11) =864a(12) =2100a(13) =5160a(14) =12796a(15) =31952a(16) =80272a(17) =202821a(18) =515057a(19) =1313716a(20) =3364049a(21) =8645559a(22) =22291985a(23) =57649712a(24) =149496257a(25) =388647248a(26) =1012717568a(27) =2644555020a(28) =6919609962a(29) =18139104129