OFFSET
1,2
COMMENTS
Column 6 of A230068
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..0..0..1..2..1....0..2..1..0..0..0....1..0..1..0..0..0....2..1..0..1..0..0
..0..2..2..0..1..0....0..2..2..1..2..2....2..1..1..1..2..2....0..0..1..2..2..2
..0..2..0..0..2..1....0..2..0..0..1..0....1..0..1..1..0..0....2..2..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 08 2013
STATUS
approved