G.f. satisfies A(x) = A(x^2 + x^3)/x^2 - 1.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =14a(7) =24a(8) =42a(9) =72a(10) =114a(11) =179a(12) =284a(13) =453a(14) =736a(15) =1213a(16) =2016a(17) =3362a(18) =5606a(19) =9318a(20) =15378a(21) =25121a(22) =40614a(23) =65216a(24) =104422a(25) =167118a(26) =267674a(27) =429297a(28) =689478a(29) =1109149