Number of nX7 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203459
Number of nX7 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =686a(2) =237999a(3) =44974778a(4) =9441977403
External references
- oeis: A203459