1/4 the number of n X 7 0..3 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
A186166
1/4 the number of n X 7 0..3 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
Terms
- a(0) =40a(1) =99933a(2) =87054174a(3) =95752776009
External references
- oeis: A186166