OFFSET
1,3
COMMENTS
Column 7 of A232654
EXAMPLE
Some solutions for n=4
..0..1..0..1..0..0..1..1..1....0..0..1..1..0..0..0..1..0
..1..1..1..1..1..1..0..0..1....0..1..0..0..0..1..1..0..0
..1..0..1..0..1..1..1..1..0....1..0..0..0..1..0..0..0..1
..1..0..1..0..1..1..1..1..0....1..0..0..0..1..0..0..0..1
..1..1..1..1..1..1..0..0..1....0..1..0..0..0..1..1..0..0
..0..1..0..1..0..0..1..1..1....0..0..1..1..0..0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2013
STATUS
approved