OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..11
EXAMPLE
Some solutions for n=3
..0..0..2..3....0..0..3..0....0..0..2..0....0..0..1..3....0..2..3..3
..0..3..2..2....0..0..3..2....0..2..2..0....0..1..0..1....2..2..1..1
..2..2..3..2....3..3..0..3....2..2..3..2....1..0..1..0....3..1..2..0
..3..2..2..1....0..2..3..0....0..0..2..1....3..1..0..1....3..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 31 2012
STATUS
approved