OFFSET
1,2
COMMENTS
Column 3 of A222953
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..15
EXAMPLE
Some solutions for n=3
..0..1..2....1..2..0....2..3..1....2..3..3....1..2..3....2..1..1....0..2..1
..2..2..1....1..3..2....3..0..0....2..2..0....3..2..2....2..2..2....2..0..0
..0..3..0....3..3..2....1..0..1....0..3..2....3..3..0....1..1..3....1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2013
STATUS
approved