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

A267564

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

Terms

    a(0) =1a(1) =10a(2) =31a(3) =170a(4) =1326a(5) =15686a(6) =279070a(7) =7353006a(8) =284780894

External references