Number of nX6 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
A207580
Number of nX6 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
Terms
- a(0) =3353a(1) =11242609a(2) =28493353430
External references
- oeis: A207580