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

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =17a(6) =45a(7) =123a(8) =356a(9) =1061a(10) =3193a(11) =9691a(12) =29741a(13) =92228a(14) =288331a(15) =907316a(16) =2871818a(17) =9138352a(18) =29217870a(19) =93813839a(20) =302367222a(21) =977913351a(22) =3172727729a(23) =10323213290a(24) =33677758165a(25) =110135406578a(26) =360982631871