OFFSET
1,1
COMMENTS
Diagonal of A209716
EXAMPLE
Some solutions for n=4
..0..2..0..1..2....1..0..3..3..0....3..3..2..3..0....0..2..1..1..0
..1..3..0..3..1....1..3..1..0..2....0..1..3..0..2....2..1..3..0..2
..3..2..2..0..3....3..2..3..2..1....2..0..2..2..1....0..2..1..1..0
..2..0..3..0..1....1..0..0..0..2....1..2..3..0..2....2..1..3..0..2
..1..2..2..2..0....3..1..3..2..1....2..0..1..0..3....1..3..2..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 11 2012
STATUS
approved