Number of nX7 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
A207478
Number of nX7 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
Terms
- a(0) =10686a(1) =114190596a(2) =415949940602
External references
- oeis: A207478