OFFSET
1,2
COMMENTS
Column 4 of A230968
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..2..3..3....0..1..2..0....0..1..3..0....0..3..0..1....0..3..0..1
..3..1..0..2....2..3..1..3....1..3..2..1....1..0..2..0....1..1..2..0
..0..0..3..1....0..1..2..0....2..2..0..3....2..3..3..1....2..3..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 02 2013
STATUS
approved