OFFSET
1,1
COMMENTS
Column 6 of A222430.
EXAMPLE
Some solutions for n=4
..0..0..0..1..1..1....0..0..0..0..0..1....0..0..0..0..1..1....0..0..1..2..2..2
..0..0..1..1..1..1....0..0..0..0..0..1....0..0..0..0..0..1....2..2..2..2..2..2
..1..0..2..1..1..1....1..0..0..0..0..0....0..0..0..0..0..0....1..1..2..2..2..2
..1..2..1..1..1..1....1..1..0..0..0..2....0..0..2..0..2..1....1..1..1..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 19 2013
STATUS
approved