Number of nX7 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203442
Number of nX7 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =186348a(2) =6975234574
External references
- oeis: A203442