Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1's.
A295246
Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 3 1's.
Terms
- a(0) =2a(1) =11a(2) =183a(3) =8271a(4) =1081924a(5) =403318354a(6) =430246838462
External references
- oeis: A295246