121406

Appears in sequences

• G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n / (1-x)^(2*n+1) * [ Sum_{k=0..n} C(n,k)^2 * x^k ]^2.at n=7A246464
• Egyptian fraction representation of sqrt(48) (A010502) using a greedy function.at n=5A248274
• Sum of the heights of all lattice paths from (0,0) to (n,0) that do not go below the x-axis, and at (x,y) only allow steps (1,v) with v in {-1,0,1,...,y+1}.at n=12A333504