OFFSET
1,1
COMMENTS
Column 4 of A223066
EXAMPLE
Some solutions for n=3
..1..0..2..0....2..0..0..1....0..3..1..1....0..0..0..1....3..0..1..2
..3..0..2..2....3..3..3..2....0..1..2..0....0..3..3..1....1..1..2..0
..1..0..2..0....3..1..1..2....0..3..1..1....0..0..0..1....3..0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 13 2013
STATUS
approved