OFFSET
1,2
COMMENTS
Column 7 of A221755
EXAMPLE
Some solutions for n=3
..0..2..1..1..2..2..1....0..2..0..2..0..2..1....0..2..1..1..1..1..2
..1..1..0..1..0..2..1....2..0..1..1..1..2..0....1..1..0..1..0..2..0
..1..1..1..1..0..1..1....1..1..1..1..1..1..1....1..2..1..1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 24 2013
STATUS
approved