Number of nX7 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
A207534
Number of nX7 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
Terms
- a(0) =10686a(1) =114190596a(2) =644774919410
External references
- oeis: A207534