138360domain: NAppears in sequencesa(n) = 961*n^2 - 2*n.at n=11A158410Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=8A235013