Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1's.
A297308
Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1's.
Terms
- a(0) =1a(1) =7a(2) =117a(3) =3808a(4) =484808a(5) =200646607a(6) =197589351469
External references
- oeis: A297308