Number of (n+1) X (n+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).
A235270
Number of (n+1) X (n+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant-stress 1 X 1 tilings).
Terms
- a(0) =40a(1) =208a(2) =632a(3) =2344a(4) =6232a(5) =20440a(6) =51800a(7) =160888a(8) =401560a(9) =1215928a(10) =3032792a(11) =9077944a(12) =22776472a(13) =67860280
External references
- oeis: A235270