OFFSET
1,3
COMMENTS
Column 4 of A265170.
EXAMPLE
Some solutions for n=4
..0..1..2..1....0..1..2..3....0..1..2..0....0..1..0..2....0..1..2..3
..3..2..1..0....2..3..1..0....3..2..1..3....1..3..1..3....1..2..3..0
..2..3..0..3....3..2..0..3....1..0..3..2....2..0..2..1....0..1..2..3
..3..0..1..2....1..0..1..2....0..2..1..3....3..2..3..0....2..3..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2015
STATUS
approved