Number of (n+1) X (3+1) 0..5 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).
A235021
Number of (n+1) X (3+1) 0..5 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).
Terms
- a(0) =1248a(1) =4312a(2) =14800a(3) =51220a(4) =177520a(5) =617600a(6) =2152744a(7) =7527124a(8) =26367488a(9) =92632604a(10) =326009192a(11) =1150507192a(12) =4067126368a(13) =14415310196a(14) =51176035576a(15) =182134771204a(16) =649220616600
External references
- oeis: A235021