G.f. A(x) satisfies: A(x) = x + x^3 * exp(A(x) + A(x^2)/2 + A(x^3)/3 + A(x^4)/4 + ...).

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =4a(8) =7a(9) =11a(10) =17a(11) =28a(12) =46a(13) =74a(14) =124a(15) =206a(16) =343a(17) =577a(18) =976a(19) =1649a(20) =2808a(21) =4792a(22) =8200a(23) =14073a(24) =24228a(25) =41782a(26) =72246a(27) =125164a(28) =217262a(29) =377784