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

Terms

a(0) =1a(1) =1a(2) =3a(3) =2a(4) =12a(5) =7a(6) =25a(7) =10a(8) =84a(9) =37a(10) =162a(11) =50a(12) =444a(13) =140a(14) =753a(15) =160a(16) =1983a(17) =510a(18) =3224a(19) =570a(20) =7890a(21) =1591a(22) =11886a(23) =1572a(24) =28770a(25) =4889a(26) =41844a(27) =4680a(28) =97524a(29) =13356