OFFSET
1,1
COMMENTS
Column 8 of A183811
EXAMPLE
Some solutions with upper left block zero for 3X9
..0..0..0..1..1..0..0..0..1....0..0..0..0..1..1..1..1..1
..0..0..1..1..0..1..1..0..0....0..0..1..1..1..0..0..1..1
..1..1..1..0..1..1..1..1..0....0..1..1..0..0..1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved