OFFSET
1,2
COMMENTS
Column 3 of A267836.
EXAMPLE
Some solutions for n=4
..0..0..3....0..3..1....0..0..1....0..1..2....0..2..3....0..0..1....0..3..1
..1..0..1....0..1..2....1..1..3....1..2..3....2..3..1....0..2..3....0..1..1
..1..2..2....1..2..2....2..3..2....2..3..0....0..2..0....2..3..1....2..2..2
..3..3..2....3..3..0....0..3..2....0..1..3....3..1..1....3..1..2....3..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 21 2016
STATUS
approved