OFFSET
1,1
COMMENTS
Column 7 of A221139.
EXAMPLE
Some solutions for n=3
..0..1..2..2..1..1..1....0..1..2..2..1..1..0....0..1..1..2..1..1..0
..0..1..2..2..1..2..1....0..1..1..2..2..2..0....0..1..1..2..2..1..0
..0..1..1..0..0..2..0....0..1..2..1..0..2..0....0..1..2..2..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2013
STATUS
approved