Number of (n+1)X(5+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor.
A232121
Number of (n+1)X(5+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor.
Terms
- a(0) =21717a(1) =6462505a(2) =1841606457a(3) =539351064745
External references
- oeis: A232121