Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
A234670
Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
Terms
- a(0) =229272a(1) =1648188a(2) =11826092a(3) =85076140a(4) =612823800a(5) =4421960468a(6) =31951474920a(7) =231249678820
External references
- oeis: A234670