1/3 the number of nX6 0..2 arrays with no element equal both to the element above and to the element to its left.
A184691
1/3 the number of nX6 0..2 arrays with no element equal both to the element above and to the element to its left.
Terms
- a(0) =243a(1) =98304a(2) =39133824a(3) =15564399648
External references
- oeis: A184691