OFFSET
1,1
COMMENTS
Row 7 of A218522
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..0..2....0..0..0....0..0..0....0..0..0
..1..0..1....3..0..3....1..0..2....0..0..2....1..0..3....0..1..3....2..0..3
..3..1..2....3..2..1....2..2..3....3..0..0....1..0..3....2..0..1....3..3..3
..2..0..2....1..1..1....2..2..2....0..0..1....0..0..0....0..0..2....3..1..1
..0..0..1....1..2..2....3..2..2....1..2..2....0..0..3....2..2..2....3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 31 2012
STATUS
approved