OFFSET
1,1
COMMENTS
Row 7 of A219578
EXAMPLE
Some solutions for n=3
..2..0..0....1..0..0....0..0..0....0..0..0....1..0..0....2..0..0....2..0..0
..0..0..0....0..0..0....2..0..0....1..0..0....0..0..0....1..0..0....2..0..0
..1..0..0....2..0..0....2..0..0....1..0..0....2..0..0....1..1..0....2..0..0
..1..0..0....2..2..3....2..1..0....0..0..0....1..0..0....1..1..0....2..0..0
..2..1..0....2..0..1....1..0..0....2..0..0....1..1..0....2..0..0....2..1..0
..3..0..0....0..0..0....1..0..0....2..1..0....3..0..0....2..0..0....3..0..0
..3..2..0....0..0..0....3..1..0....3..0..0....3..1..0....2..2..0....3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 23 2012
STATUS
approved