OFFSET
1,1
COMMENTS
Row 4 of A267222.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..19
EXAMPLE
Some solutions for n=4
..0..3..3..2....0..2..2..1....0..2..1..3....0..2..1..1....0..3..2..2
..2..2..0..3....1..1..0..3....2..0..3..3....0..0..3..3....1..1..0..0
..1..0..2..1....0..3..2..1....0..2..1..1....2..2..1..3....1..3..2..0
..3..1..1..0....2..0..3..3....2..0..3..1....2..0..3..1....3..1..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 12 2016
STATUS
approved