OFFSET
1,2
COMMENTS
Column 5 of A221429
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..15
EXAMPLE
Some solutions for n=3
..0..0..1..1..0....1..1..1..1..0....0..1..0..0..1....0..1..0..1..1
..2..2..1..3..1....1..2..0..2..2....1..2..3..2..2....2..1..1..2..0
..0..2..0..1..1....0..3..0..0..1....1..0..1..1..0....1..1..1..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2013
STATUS
approved