OFFSET
1,2
COMMENTS
Diagonal of A202979
EXAMPLE
Some solutions for n=5
..0..0..1..1..0....1..1..1..1..1....0..1..1..1..0....1..1..1..0..0
..0..0..1..1..0....1..1..0..1..1....1..1..0..1..0....1..0..1..1..0
..1..1..1..0..0....1..1..0..1..0....1..1..1..1..1....1..1..1..1..1
..1..1..1..1..1....0..0..0..1..1....1..1..1..0..1....0..1..1..1..1
..1..1..0..1..1....0..0..0..1..1....0..0..1..1..1....0..1..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 26 2011
STATUS
approved