OFFSET
1,3
COMMENTS
Column 5 of A264945.
EXAMPLE
Some solutions for n=3
..0..1..2..0..1....0..1..2..1..2....0..1..2..1..2....0..1..0..2..1
..0..2..0..1..2....1..2..1..0..2....2..0..2..0..1....1..2..0..1..0
..1..2..1..0..2....0..2..0..1..0....1..0..2..0..1....2..0..2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2015
STATUS
approved