OFFSET
1,2
COMMENTS
Column 5 of A221361
EXAMPLE
Some solutions for n=3
..0..1..2..2..0....0..2..1..1..1....0..0..1..1..2....0..2..1..1..2
..0..1..1..1..1....0..1..1..2..1....1..1..2..2..1....1..0..1..2..1
..2..1..1..2..0....2..0..0..2..1....1..0..2..0..1....1..1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 12 2013
STATUS
approved