Number of nX3 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203438
Number of nX3 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =64a(2) =4124a(3) =142108a(4) =4401184a(5) =168492336a(6) =6975234574a(7) =276131799334
External references
- oeis: A203438