Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 4 neighboring 1s.
A297768
Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 4 neighboring 1s.
Terms
- a(0) =1a(1) =69a(2) =28565a(3) =720785a(4) =18733087a(5) =1504842706a(6) =108229776807
External references
- oeis: A297768