Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1's.
A296328
Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1's.
Terms
- a(0) =2a(1) =8a(2) =64a(3) =1235a(4) =50595a(5) =4476519a(6) =869077778a(7) =366077961514
External references
- oeis: A296328