OFFSET
1,2
COMMENTS
Diagonal of A231302
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..0..1..1..1....0..0..0..1..1....0..0..0..1..1
..1..1..0..0..0....0..0..1..1..1....0..0..1..1..0....0..0..1..1..1
..1..1..1..1..1....0..1..1..1..1....0..1..1..0..0....1..1..1..1..1
..0..0..1..1..1....0..1..1..1..0....1..1..0..0..1....1..2..2..1..1
..0..0..0..0..0....0..0..0..0..0....1..1..0..1..1....2..2..2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 07 2013
STATUS
approved