OFFSET
1,2
COMMENTS
Column 3 of A200272
EXAMPLE
All solutions for n=6
..1....2....2....1....1....3....2....0
..0....3....1....1....2....3....2....0
..1....2....2....1....1....3....2....0
..2....1....3....1....0....3....2....0
..2....1....3....1....0....3....2....0
..1....2....2....1....1....3....2....0
..0....3....1....1....2....3....2....0
..1....2....2....1....1....3....2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 15 2011
STATUS
approved