OFFSET
1,3
COMMENTS
Column 5 of A194193.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..24
EXAMPLE
Some solutions for 3 X 3:
..0..1..0....1..0..1....0..1..1....1..1..0....1..1..0....1..1..0....1..0..1
..0..1..1....1..1..0....1..0..0....1..0..1....1..0..0....0..0..1....1..0..0
..1..0..1....0..1..0....0..1..1....0..0..1....0..1..1....1..1..0....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 18 2011
STATUS
approved