Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1's.
A297688
Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1's.
Terms
- a(0) =2a(1) =8a(2) =95a(3) =1774a(4) =118791a(5) =11111767a(6) =3487451085
External references
- oeis: A297688