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

Terms

a(0) =1a(1) =2a(2) =5a(3) =4a(4) =14a(5) =10a(6) =28a(7) =8a(8) =69a(9) =28a(10) =116a(11) =20a(12) =252a(13) =56a(14) =340a(15) =16a(16) =726a(17) =138a(18) =916a(19) =56a(20) =1982a(21) =232a(22) =2120a(23) =40a(24) =4844a(25) =504a(26) =4860a(27) =112a(28) =11320a(29) =680