OFFSET
1,1
COMMENTS
Column 6 of A220070
EXAMPLE
Some solutions for n=3
..1..0..0..0..1..1....0..0..0..1..1..1....0..0..0..0..1..1....0..1..1..1..0..0
..0..1..1..0..0..0....0..1..1..1..1..1....0..0..1..0..0..1....0..1..1..1..1..0
..1..0..1..0..0..0....1..0..0..1..0..1....1..0..1..1..1..1....0..1..1..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2012
STATUS
approved