OFFSET
1,2
COMMENTS
Column 5 of A199588.
EXAMPLE
Some solutions for n=3
..0..1..1..1..1....0..1..1..2..2....0..1..2..2..2....0..1..2..2..2
..0..2..2..0..0....0..0..1..2..2....0..1..3..1..3....0..1..0..0..1
..2..2..3..3..3....3..3..1..3..3....0..0..3..1..3....3..3..3..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 08 2011
STATUS
approved