OFFSET
1,2
COMMENTS
Column 4 of A221429
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..30
EXAMPLE
Some solutions for n=3
..1..1..1..0....1..1..1..1....0..1..0..0....1..1..1..0....1..1..0..1
..2..0..3..2....1..1..1..1....2..1..3..2....1..2..2..2....0..0..3..2
..1..0..1..0....1..2..1..0....2..0..1..0....0..2..0..0....2..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2013
STATUS
approved