OFFSET
1,2
COMMENTS
Column 5 of A199363
EXAMPLE
Some solutions for n=3
..0..1..1..2..2....0..0..1..1..1....0..1..1..2..2....0..0..1..1..1
..0..0..2..1..3....2..3..1..0..0....0..3..3..2..1....2..0..3..3..3
..3..3..2..1..3....2..3..3..2..2....3..3..0..0..1....2..0..3..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved