Number of n X n 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors less than or equal to itself.

A196536

Number of n X n 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors less than or equal to itself.

Terms

    a(0) =1a(1) =23a(2) =555a(3) =340286a(4) =1202209625

External references