OFFSET
1,3
COMMENTS
Subdiagonal 4 of A180989
EXAMPLE
All solutions for 7X3
..0..0..0....0..0..0....0..0..0....0..0..1
..0..0..1....0..0..1....0..0..1....0..1..0
..0..1..0....0..1..0....0..1..1....0..1..1
..0..1..1....1..0..0....1..0..0....1..0..0
..1..0..0....1..0..1....1..0..1....1..0..1
..1..0..1....1..1..0....1..1..0....1..1..0
..1..1..0....1..1..1....1..1..1....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 30 2010
STATUS
approved