OFFSET
1,1
COMMENTS
Column 5 of A219883
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..23
EXAMPLE
Some solutions for n=3
..1..0..0..0..0....1..1..0..0..0....2..2..1..1..1....2..2..1..0..0
..1..0..0..0..0....1..1..0..0..0....2..2..1..1..1....2..2..1..0..1
..1..0..1..0..0....2..1..1..1..2....2..2..2..1..2....2..2..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 30 2012
STATUS
approved