Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 3 or 4 1's.
A295646
Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 3 or 4 1's.
Terms
- a(0) =2a(1) =11a(2) =184a(3) =8391a(4) =1117226a(5) =426233396a(6) =468469936974
External references
- oeis: A295646