OFFSET
1,3
COMMENTS
Column 2 of A266455.
EXAMPLE
Some solutions for n=4
..0..1....0..0....0..2....0..3....0..3....0..3....0..2....0..3....0..2....0..1
..2..3....3..3....2..0....0..3....2..3....0..1....3..0....2..3....2..1....3..1
..0..1....1..2....1..3....2..1....2..1....2..1....1..3....1..2....1..3....2..3
..2..3....1..2....3..1....2..1....1..0....2..3....1..2....0..1....0..3....0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2015
STATUS
approved