OFFSET
1,1
COMMENTS
Column 7 of A220153
EXAMPLE
Some solutions for n=3
..1..1..1..1..0..0..0....1..1..1..1..0..0..0....2..1..1..1..1..0..0
..1..0..0..0..1..0..0....1..1..1..1..1..0..0....2..2..2..1..1..0..1
..1..0..0..0..0..0..2....2..1..1..1..1..0..0....2..2..2..2..2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2012
STATUS
approved