OFFSET
1,1
COMMENTS
Column 7 of A199230
EXAMPLE
Some solutions for n=4
..0..1..2..2..1..2..2....0..1..2..1..2..2..0....0..1..0..2..2..1..0
..0..1..0..0..2..0..0....0..1..2..0..0..1..2....0..1..2..0..1..2..1
..1..0..2..1..0..2..2....1..0..0..2..1..2..0....1..0..2..1..0..2..1
..0..1..1..0..2..1..1....0..1..1..2..0..1..2....0..1..0..2..2..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved