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