OFFSET
1,1
COMMENTS
Column 3 of A233049
EXAMPLE
Some solutions for n=2
..0..0..1..1....2..1..1..2....2..2..0..1....0..2..1..0....2..1..1..1
..0..0..2..2....0..1..2..2....1..0..2..1....0..2..1..1....2..0..2..2
..0..0..2..2....1..1..2..2....0..1..1..2....0..0..1..2....0..1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2013
STATUS
approved