87257

Properties

Appears in sequences

• Number of weighted lattice paths in F[n]. The members of F[n] are paths of weight n that start at (0,0), do not go below the horizontal axis, and whose steps are of the following four kinds: an (1,0)-step with weight 1, an (1,0)-step with weight 2, a (1,1)-step with weight 2, and a (1,-1)-step with weight 1. The weight of a path is the sum of the weights of its steps.at n=14A182905
• Primes of the form n^2 + phi(n).at n=40A264771
• Number of permutations of [n] avoiding {1423, 2341, 3124}.at n=11A294696
• Prime numbersat n=8473