Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1's.
A295090
Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1's.
Terms
- a(0) =1a(1) =5a(2) =33a(3) =578a(4) =21185a(5) =1767431a(6) =329926211a(7) =137994394960
External references
- oeis: A295090