OFFSET
1,3
COMMENTS
Column 7 of A266081.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..2..3..2
..2..3..2..2..3..2..0....0..0..2..3..2..0..0....0..0..0..0..3..4..3
..3..4..3..3..4..3..0....0..0..3..4..3..0..0....0..0..0..0..2..3..2
..2..3..2..2..3..2..0....0..0..2..3..2..0..0....0..0..0..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 20 2015
STATUS
approved