G.f. satisfies: A(x) = 1+x + x^2*A'(x)*A(x)^2.

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =19a(5) =116a(6) =835a(7) =6890a(8) =63826a(9) =654552a(10) =7354893a(11) =89830770a(12) =1184915556a(13) =16788863356a(14) =254342837905