Number of (n+1)X(4+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.
A232253
Number of (n+1)X(4+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.
Terms
- a(0) =1287a(1) =96999a(2) =7258599a(3) =544777651a(4) =40896843985
External references
- oeis: A232253