515092048

Appears in sequences

• Number of paths from (0,0,0) to (n,n,n) that always move closer to (n,n,n).at n=5A316673
• Number A(n,k) of paths from {0}^k to {n}^k that always move closer to {n}^k; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=41A316674