T(n,k) is the number of (n+1) X (k+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

A234481

T(n,k) is the number of (n+1) X (k+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

Terms

    a(0) =672a(1) =7840a(2) =7840a(3) =95872a(4) =141728a(5) =95872a(6) =1200640a(7) =2765648a(8) =2765648a(9) =1200640a(10) =15217152a(11) =56172656a(12) =87871120a(13) =56172656a(14) =15217152a(15) =194145280a(16) =1165600828a(17) =2941603932a(18) =2941603932a(19) =1165600828a(20) =194145280a(21) =2484815872a(22) =24484032192

External references