149440

Appears in sequences

• Fibonacci sequence beginning 5, 19.at n=20A022143
• G.f. A(x) satisfies: x*A(x) + x^2*A(x)^2 = C(x)^2, where C(x) = x + C(x)^2 is a g.f. of the Catalan numbers (A000108).at n=11A273958