217301

Appears in sequences

• If n is 0, 1, or prime, a(n) = n; else a(n) = a(n-1) + a(n-2).at n=52A265822
• Number of shapes of left-leaning height-balanced AVL trees with n (inner) nodes.at n=40A296103
• Expansion of 1/( (1 + x)^2 * (1 - x*(1 + x)^3) ).at n=14A375363