OFFSET
1,1
COMMENTS
Column 7 of A203610
EXAMPLE
Some solutions for 4X4
..1..0..1..0..1..1..1....1..0..0..1..0..1..0....1..0..0..1..0..1..1
..1..1..1..1..1..1..1....0..0..1..0..1..1..1....1..1..0..0..1..1..1
..1..1..1..1..1..1..0....1..0..0..0..1..0..0....0..0..1..1..1..1..0
..0..0..0..0..1..0..0....1..1..1..0..0..1..0....0..0..1..1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2012
STATUS
approved