Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.

A264648

Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.