OFFSET
1,1
COMMENTS
Column 6 of A223033
EXAMPLE
Some solutions for n=3
..0..1..0..1..0..1....0..1..2..0..1..2....0..1..2..0..1..2....0..1..0..2..2..1
..2..1..1..1..2..2....2..0..0..0..0..0....0..0..0..0..2..0....2..2..2..2..0..2
..1..0..2..0..2..0....0..1..0..1..2..1....2..1..2..1..2..1....0..1..2..1..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2013
STATUS
approved