Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west or southwest neighbor modulo n and the upper left element equal to 0.

A267071

Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west or southwest neighbor modulo n and the upper left element equal to 0.

Terms

    a(0) =1a(1) =0a(2) =6a(3) =1129a(4) =437427a(5) =310439601a(6) =368078731163

External references