OFFSET
1,1
COMMENTS
Row 7 of A224391
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..23
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..1....0..0..2....0..0..2....0..0..2....0..0..0....0..0..2
..0..2..2....2..2..2....2..2..3....0..2..3....0..0..3....0..0..0....2..2..2
..0..1..1....0..2..2....0..2..2....0..0..0....0..3..3....0..1..1....0..3..3
..1..2..2....2..3..3....2..3..3....0..2..2....0..2..2....1..2..3....2..2..2
..0..1..2....0..2..3....0..3..3....0..0..3....0..1..3....1..2..3....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 05 2013
STATUS
approved