Number of nX6 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203344
Number of nX6 0..4 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =2329a(2) =2566719a(3) =1288066857a(4) =643689050030
External references
- oeis: A203344