Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).
A234489
Number of (n+1) X (7+1) 0..3 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) =220334a(1) =765738a(2) =2659824a(3) =9288710a(4) =32545706a(5) =114484712a(6) =404043442a(7) =1431125914a(8) =5084793448a(9) =18127421166a(10) =64813774926a(11) =232475602952a(12) =836155485018
External references
- oeis: A234489