G.f. A(x) satisfies: A( x - A(x)*B(x) ) = x such that B( x - x*A(x) ) = x, where B(x) is the g.f. of A263187.

A263186

G.f. A(x) satisfies: A( x - A(x)*B(x) ) = x such that B( x - x*A(x) ) = x, where B(x) is the g.f. of A263187.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =23a(4) =160a(5) =1260a(6) =10861a(7) =100474a(8) =984944a(9) =10142888a(10) =109039530a(11) =1218011097a(12) =14086708075a(13) =168205533546

External references