Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1's.
A297500
Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1's.
Terms
- a(0) =1a(1) =10a(2) =110a(3) =2281a(4) =270845a(5) =66289769a(6) =28914051279
External references
- oeis: A297500