670480

Appears in sequences

• Number of n X n array permutations with each element not moved or moved diagonally or antidiagonally by one.at n=4A189273
• Number of nX5 array permutations with each element not moved or moved diagonally or antidiagonally by one.at n=4A189276
• T(n,k) = number of n X k array permutations with each element not moved or moved diagonally or antidiagonally by one.at n=40A189280