OFFSET
1,1
COMMENTS
Column 4 of A223663
EXAMPLE
Some solutions for n=3
..2..2..3..2....0..0..0..0....0..0..0..2....2..2..0..0....2..2..2..2
..2..2..0..2....1..0..0..2....3..0..0..2....2..2..1..0....2..2..1..2
..3..2..0..1....0..1..3..1....2..2..0..0....2..1..3..1....2..0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 25 2013
STATUS
approved