OFFSET
1,2
COMMENTS
Column 4 of A268159.
EXAMPLE
Some solutions for n=4
..0..0..3..1....0..0..2..1....0..2..2..0....0..1..0..2....0..1..1..2
..0..0..3..1....0..0..2..1....0..2..0..1....0..1..0..2....0..1..2..3
..3..2..2..1....1..2..3..3....2..3..3..1....1..3..3..2....1..2..3..0
..3..2..2..1....1..2..3..3....3..3..1..1....1..3..3..2....2..3..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2016
STATUS
approved