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 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
A235212
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 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
Terms
- a(0) =240a(1) =1172a(2) =1172a(3) =5696a(4) =4616a(5) =5696a(6) =27812a(7) =18444a(8) =18444a(9) =27812a(10) =135520a(11) =76112a(12) =61160a(13) =76112a(14) =135520a(15) =662892a(16) =319156a(17) =215996a(18) =215996a(19) =319156a(20) =662892a(21) =3236288a(22) =1374400a(23) =781040a(24) =672256a(25) =781040a(26) =1374400a(27) =3236288a(28) =15860868a(29) =5998924
External references
- oeis: A235212