OFFSET
1,2
COMMENTS
Row 5 of A221809
EXAMPLE
Some solutions for n=3
..0..1..0....1..2..1....1..1..0....0..1..0....0..1..0....0..2..0....2..1..1
..1..2..2....0..1..1....1..2..2....0..3..1....2..3..0....2..0..1....1..0..1
..1..2..0....0..2..0....0..1..1....2..1..0....0..1..3....2..1..1....0..2..0
..1..1..0....2..2..1....0..3..1....0..2..2....1..1..1....1..1..1....2..2..2
..1..1..2....1..0..1....0..2..0....1..2..0....0..1..1....2..0..1....0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 26 2013
STATUS
approved