OFFSET
1,1
COMMENTS
Column 3 of A204884
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..13
EXAMPLE
Some solutions for n=3
..0..0..0..0..0....0..0..1..1..1....0..0..0..0..1....0..0..0..1..0
..0..0..1..1..2....1..0..2..2..3....0..2..1..0..3....2..2..1..1..2
..1..1..2..1..3....1..0..1..3..1....3..3..0..3..0....2..0..1..1..2
..2..2..2..1..2....3..3..3..3..3....1..1..1..1..1....3..1..1..3..3
..1..2..3..1..0....2..0..3..0..1....0..2..0..1..0....3..2..1..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 20 2012
STATUS
approved