Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1's.
A295545
Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1's.
Terms
- a(0) =1a(1) =5a(2) =34a(3) =598a(4) =23315a(5) =2094347a(6) =434357928a(7) =207301696580
External references
- oeis: A295545