Number of nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.
A199653
Number of nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.
Terms
- a(0) =122a(1) =67774a(2) =31120632a(3) =14399942873
External references
- oeis: A199653