Number of nX7 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
A207581
Number of nX7 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
Terms
- a(0) =12747a(1) =162486009
External references
- oeis: A207581