Number of nX3 0..5 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203333
Number of nX3 0..5 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =36a(2) =1311a(3) =27056a(4) =532547a(5) =12872510a(6) =327579980a(7) =8009744714a(8) =193577903773
External references
- oeis: A203333