OFFSET
1,1
COMMENTS
Diagonal of A251829
EXAMPLE
Some solutions for n=3
..0..3..2..3..3....0..0..2..0..3....0..1..0..1..3....0..0..1..0..0
..3..0..2..0..0....3..3..2..0..3....1..0..1..0..1....3..3..1..3..0
..1..1..3..1..1....1..1..3..1..1....3..1..3..1..3....2..2..0..2..2
..0..0..2..0..0....3..3..2..0..3....1..0..1..0..1....3..0..1..3..3
..0..0..2..0..3....0..3..2..3..0....3..1..0..1..0....3..0..1..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved