OFFSET
1,1
COMMENTS
Column 3 of A223751
EXAMPLE
Some solutions for n=3
..0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..2....0..0..0..2
..2..2..3..3....1..0..2..3....2..1..0..3....1..0..3..1....1..1..2..2
..0..1..3..1....1..1..2..2....0..1..2..2....0..2..3..3....2..0..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved