OFFSET
1,1
COMMENTS
Row 6 of A222906
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..1....0..0..1....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..1..1....0..0..1....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....2..0..1....1..1..1....0..0..0....0..0..0....0..0..1
..0..0..0....0..0..0....0..0..0....1..1..1....0..1..2....1..2..0....1..1..1
..1..1..0....1..0..1....0..0..0....2..1..0....1..1..3....0..1..1....1..2..2
..2..1..3....1..1..1....0..0..0....0..2..2....3..0..1....0..1..1....1..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 09 2013
STATUS
approved