OFFSET
1,2
COMMENTS
Superdiagonal 3 of A181031
LINKS
R. H. Hardin, Table of n, a(n) for n=1..22
EXAMPLE
Some solutions for 4X7
..1..1..1..1..1..1..1....1..1..1..1..1..1..1....1..1..1..1..1..1..1
..1..0..1..0..1..0..1....1..0..1..0..1..0..1....1..0..1..0..1..0..1
..1..1..0..1..0..1..0....1..1..0..1..0..1..0....1..1..0..1..0..1..0
..1..0..1..0..1..0..1....1..0..1..0..1..1..1....1..0..1..1..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 30 2010
STATUS
approved