OFFSET
1,1
EXAMPLE
Some solutions for n=3
..0..0..0..0..0....0..0..0..0..0....1..2..1..0..0....0..0..1..3..0
..2..1..0..2..1....3..1..2..3..0....0..0..0..0..0....0..0..0..3..3
..1..0..1..1..0....0..0..0..0..0....0..0..0..0..0....0..0..1..3..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..1..0....0..0..0..0..0
..0..0..0..0..0....0..0..3..1..1....0..0..0..3..0....0..0..0..1..1
CROSSREFS
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Apr 09 2013
STATUS
approved