Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1's.
A296571
Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1's.
Terms
- a(0) =2a(1) =11a(2) =135a(3) =4543a(4) =368720a(5) =76657600a(6) =40337678992
External references
- oeis: A296571