OFFSET
1,2
COMMENTS
Column 3 of A183253.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..100
EXAMPLE
Some solutions with a(1,1)=0 for 3 X 3
..0..1..1....0..1..1....0..0..0....0..1..0....0..1..0....0..0..1....0..1..0
..0..1..0....0..0..1....1..1..1....0..1..0....0..1..1....0..0..1....1..1..0
..0..1..0....1..0..1....0..0..1....0..1..1....0..0..1....1..1..1....1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2011
STATUS
approved