G.f. satisfies: A(x) = (1 + x*(d/dx x*A(x)) )^2.

A113662

G.f. satisfies: A(x) = (1 + x*(d/dx x*A(x)) )^2.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =62a(4) =566a(5) =6372a(6) =84837a(7) =1300214a(8) =22511322a(9) =434226300a(10) =9231983850a(11) =214481625516

External references