OFFSET
1,1
COMMENTS
Row 4 of A266183.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..16
EXAMPLE
Some solutions for n=3
..2..1..2....3..1..2....0..0..2....3..1..0....2..3..2....1..3..0....1..3..1
..0..3..0....1..3..0....1..0..2....0..2..0....1..0..3....2..0..3....3..3..2
..3..2..1....3..1..2....2..3..1....2..1..2....1..3..0....0..3..2....1..2..2
..3..1..0....0..2..0....1..3..3....1..3..3....2..0..1....1..2..1....0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 23 2015
STATUS
approved