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 2 (constant-stress 1 X 1 tilings).
A234245
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 2 (constant-stress 1 X 1 tilings).
Terms
- a(0) =630a(1) =6706a(2) =6706a(3) =72616a(4) =99630a(5) =72616a(6) =790718a(7) =1520024a(8) =1520024a(9) =790718a(10) =8612920a(11) =23428586a(12) =32965378a(13) =23428586a(14) =8612920a(15) =93934380a(16) =361889580a(17) =725628904a(18) =725628904a(19) =361889580a(20) =93934380a(21) =1023822944a(22) =5604275160a(23) =16021165696
External references
- oeis: A234245