380400

Appears in sequences

• "DIK" (bracelet, indistinct, unlabeled) transform of 1,2,3,4,...at n=16A032287
• Triangle read by rows: let T(n,k) (for n >= 0, 0 <= k <= n) be the number of walks from (0,0) to (n,k) using steps (1,1), (1,0), (1,-1) and (0,-1); n-th row of triangle gives T(n,n), T(n,n-1), ..., T(n,0).at n=62A223092