Number of (n+1) X (n+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
A235290
Number of (n+1) X (n+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
Terms
- a(0) =40a(1) =232a(2) =832a(3) =3184a(4) =9568a(5) =32992a(6) =97888a(7) =333952a(8) =1044640a(9) =3677632
External references
- oeis: A235290