OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..11
EXAMPLE
Some solutions for n=3
..0..1..3..0....0..1..1..2....0..1..1..3....0..1..2..0....0..1..2..0
..1..2..3..0....1..2..3..1....1..2..2..3....1..2..3..0....1..0..2..2
..3..3..3..2....1..3..3..3....1..2..2..2....2..3..0..3....2..2..3..0
..0..0..2..3....2..1..3..3....3..3..2..1....0..0..3..2....0..2..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2012
STATUS
approved