OFFSET
1,1
COMMENTS
Diagonal of A223663
EXAMPLE
Some solutions for n=3
..1..0..2....0..0..1....0..0..1....0..1..0....3..0..2....2..1..3....2..0..2
..3..2..3....2..0..1....2..0..3....3..3..2....1..2..2....3..2..1....0..2..2
..0..1..2....2..1..2....0..2..2....3..1..1....2..2..0....0..2..2....3..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 25 2013
STATUS
approved