OFFSET
1,3
COMMENTS
Column 2 of A267222.
EXAMPLE
Some solutions for n=4
..0..3....0..3....0..2....0..3....0..3....0..0....0..2....0..3....0..3....0..3
..2..1....2..2....1..0....2..0....3..1....2..2....2..1....2..1....1..1....2..2
..1..0....1..0....3..2....3..2....1..0....1..3....3..3....0..3....0..3....0..3
..3..2....3..1....1..3....1..1....2..2....3..1....1..0....2..1....2..2....1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 12 2016
STATUS
approved