Number of n X n 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
A203543
Number of n X n 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
Terms
- a(0) =1a(1) =25a(2) =32920a(3) =276550270
External references
- oeis: A203543