Number of (n+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor.

A232196

Number of (n+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor.

Terms

    a(0) =15a(1) =2129a(2) =2064527a(3) =16237318767

External references