OFFSET
1,2
COMMENTS
Column 5 of A230840
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..178
EXAMPLE
Some solutions for n=3
..0..0..0..3..3....0..0..3..2..0....0..0..1..2..0....0..2..3..2..1
..1..2..1..0..3....1..3..3..0..1....1..2..3..1..0....1..0..0..0..0
..0..3..3..3..2....2..2..3..3..2....0..1..0..2..3....3..1..2..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 31 2013
STATUS
approved