OFFSET
1,2
COMMENTS
Column 5 of A267629.
EXAMPLE
Some solutions for n=4
..0..0..1..1..2....0..1..1..2..3....0..0..1..1..2....0..1..2..3..0
..1..2..3..3..3....1..1..2..3..3....0..0..1..2..3....1..2..3..3..0
..2..2..3..0..0....3..3..0..0..0....1..2..2..3..3....1..1..2..2..3
..1..1..2..3..0....0..1..2..2..2....1..2..3..3..0....3..0..0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2016
STATUS
approved