OFFSET
1,2
COMMENTS
Row 4 of A267655.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..34
EXAMPLE
Some solutions for n=7
..0..1..3..3..0..2..2....0..0..2..3..0..1..3....0..1..2..0..1..2..3
..0..2..3..0..1..2..3....0..1..2..0..1..2..3....1..2..3..0..2..3..0
..1..3..0..1..1..2..3....1..2..3..1..2..3..0....1..3..0..1..2..3..0
..2..0..1..1..2..3..0....1..3..0..2..2..3..1....2..3..1..1..2..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2016
STATUS
approved