55349155

Appears in sequences

• G.f. satisfies: A(x) = 1 + x*A(x)*A(-x) + x^2*A(x)^2*A(-x)^2.at n=26A143926
• G.f. A(x) satisfies A(x) = (1 + x*A(x) + x^2*A(x)^2)^2.at n=12A143927