OFFSET
1,1
COMMENTS
Row 7 of A208872
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..1..0..0....0..0..0..1....0..0..0..1....0..0..0..0
..1..2..1..1....1..0..1..2....1..1..0..0....1..1..2..1....1..1..1..1
..1..0..2..1....1..2..0..0....0..1..2..1....2..1..0..3....0..2..3..3
..3..3..1..2....3..1..3..0....3..1..3..0....2..3..0..0....3..2..0..0
..0..2..3..1....1..0..1..3....0..1..0..2....0..2..1..3....3..0..2..0
..2..0..0..1....2..3..1..3....0..1..0..2....2..0..1..0....2..3..3..0
..0..2..2..0....2..2..1..1....0..1..1..1....2..0..1..2....0..0..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 02 2012
STATUS
approved