OFFSET
1,1
COMMENTS
Row 4 of A264954.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..24
EXAMPLE
Some solutions for n=3
..0..1..2....3..2..3....2..1..2....1..3..1....2..1..3....2..3..0....0..2..3
..3..2..1....2..0..1....3..2..0....0..1..0....3..0..1....3..2..1....1..0..1
..1..3..0....1..3..2....0..3..1....3..2..3....2..3..0....0..1..3....3..2..0
..2..0..3....0..1..0....3..1..0....2..0..2....1..0..2....2..0..1....2..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2015
STATUS
approved