Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo n and the upper left element equal to 0.

A267341

Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo n and the upper left element equal to 0.

Terms

    a(0) =1a(1) =35a(2) =24a(3) =135a(4) =1223a(5) =18140a(6) =413155a(7) =14116549a(8) =711260225

External references