OFFSET
1,1
COMMENTS
Column 7 of A221303.
EXAMPLE
Some solutions for n=3
..0..1..1..1..1..2..1....0..1..1..2..2..1..2....0..1..1..2..2..2..1
..0..1..2..0..1..1..1....0..1..1..0..0..2..1....0..1..1..0..0..0..0
..0..1..1..2..2..0..2....0..1..2..2..1..1..0....0..1..2..1..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 09 2013
STATUS
approved