OFFSET
1,2
COMMENTS
Column 4 of A199363
EXAMPLE
Some solutions for n=3
..0..0..1..2....0..1..1..1....0..0..0..1....0..1..2..2....0..1..2..2
..0..3..1..2....0..2..2..2....2..2..3..1....0..1..2..3....0..1..3..2
..3..3..1..2....0..3..3..3....2..3..3..1....0..1..3..3....0..1..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved