OFFSET
1,2
COMMENTS
Column 5 of A221768
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
EXAMPLE
Some solutions for n=3
..1..2..2..1..1....0..1..1..1..1....0..1..2..1..1....1..2..1..1..1
..1..1..1..1..1....1..1..2..1..1....1..1..1..0..2....1..2..1..1..1
..0..1..1..1..0....1..1..2..1..0....1..1..1..1..1....0..1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 25 2013
STATUS
approved