Number of (n+1)X(n+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor.

A205512

Number of (n+1)X(n+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor.

Terms

    a(0) =81a(1) =2412a(2) =205803a(3) =44160240a(4) =25618992453

External references