OFFSET
1,1
COMMENTS
Diagonal of A252719
EXAMPLE
Some solutions for n=4
..0..0..1..0..0..1....0..0..1..0..0..1....0..1..0..0..1..0....0..1..1..0..1..1
..1..0..0..1..0..0....2..1..1..3..1..1....1..1..2..1..1..3....1..0..1..1..0..1
..2..0..2..2..0..2....1..2..1..1..3..1....3..1..1..2..1..1....2..2..1..2..2..1
..0..0..1..0..0..1....0..0..1..0..0..1....0..1..0..0..1..0....3..1..1..0..1..1
..3..0..0..1..0..0....2..1..1..2..1..1....1..1..3..1..1..2....1..3..1..1..0..1
..2..0..2..2..0..2....1..2..1..1..2..1....2..1..1..3..1..1....2..2..1..2..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 20 2014
STATUS
approved