Number of (n+1) X (n+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.
A232249
Number of (n+1) X (n+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.
Terms
- a(0) =9a(1) =421a(2) =175431a(3) =544777651
External references
- oeis: A232249