OFFSET
1,1
COMMENTS
Column 3 of A217999
EXAMPLE
Some solutions for n=3
..0..1..0....0..0..1....1..2..0....2..1..2....1..2..0....2..2..1....2..0..2
..0..2..2....1..2..1....1..2..0....0..0..1....2..2..2....2..1..2....0..1..1
..1..1..1....1..1..0....1..1..0....2..0..0....0..0..2....2..2..2....0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 17 2012
STATUS
approved