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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =9a(6) =14a(7) =23a(8) =37a(9) =60a(10) =99a(11) =164a(12) =273a(13) =447a(14) =725a(15) =1175a(16) =1905a(17) =3090a(18) =5005a(19) =8100a(20) =13110a(21) =21235a(22) =34450a(23) =55990a(24) =91150a(25) =148594a(26) =242509a(27) =396088a(28) =647037a(29) =1056355