OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..13
EXAMPLE
Some solutions for n=3
..0..1..3..0....0..1..0..1....0..1..3..3....0..1..1..0....0..1..1..1
..1..2..3..2....1..1..0..0....1..2..3..0....1..0..0..0....1..2..2..2
..3..3..1..3....0..0..2..1....3..3..2..3....1..0..1..2....1..2..0..0
..0..2..3..1....1..0..1..0....3..0..3..2....0..0..2..0....1..2..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2012
STATUS
approved