Number of (n+1) X (4+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
A234987
Number of (n+1) X (4+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
Terms
- a(0) =7554a(1) =35598a(2) =206556a(3) =1525462a(4) =12242044a(5) =105948984a(6) =951853990a(7) =8853338774a(8) =84210673350a(9) =816873730308
External references
- oeis: A234987