Number of (n+1) X (4+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

A234439

Number of (n+1) X (4+1) 0..2 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) =1680a(1) =13676a(2) =108404a(3) =896112a(4) =7165920a(5) =59991972a(6) =483370700a(7) =4098064360a(8) =33256428216a(9) =285401797556

External references