OFFSET
1,1
COMMENTS
Column 5 of A240260
EXAMPLE
Some solutions for n=3
..2..2..2..2..0....3..3..0..0..0....0..0..0..0..2....2..2..2..2..0
..2..1..1..2..0....3..2..3..0..0....2..0..2..0..0....2..2..0..0..0
..2..2..2..2..0....0..3..3..0..2....0..2..2..0..0....0..0..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2014
STATUS
approved