Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 1 0 vertically.
A207880
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 1 0 vertically.
Terms
- a(0) =2a(1) =16a(2) =82a(3) =575a(4) =4387a(5) =33631a(6) =618202a(7) =12501427a(8) =214612008a(9) =11062960730a(10) =657453772615
External references
- oeis: A207880