Number of (2+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor.
A232416
Number of (2+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor.
Terms
- a(0) =109a(1) =2689a(2) =44971a(3) =876881a(4) =18073053a(5) =366033741a(6) =7383754785a(7) =149129113573
External references
- oeis: A232416