OFFSET
1,1
COMMENTS
Column 7 of A222959
EXAMPLE
Some solutions for n=4
..1..1..1..0..1..1..1....0..0..1..0..1..0..0....0..1..1..1..0..0..1
..0..0..1..1..1..0..0....0..1..1..0..0..0..1....0..0..1..1..1..0..0
..0..0..1..1..1..0..0....0..1..1..0..0..0..1....0..0..1..1..1..0..0
..1..1..1..0..1..1..1....0..0..1..0..1..0..0....0..1..1..1..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2013
STATUS
approved