OFFSET
1,1
COMMENTS
Column 5 of A221234.
EXAMPLE
Some solutions for n=3
..0..2..0..0..2....0..0..2..2..2....0..1..2..1..1....0..2..0..1..1
..0..2..0..2..1....1..2..1..2..1....0..0..1..0..0....0..1..1..1..2
..2..0..2..2..0....0..0..0..2..0....1..2..2..2..2....0..1..2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 05 2013
STATUS
approved