OFFSET
1,3
COMMENTS
Column 5 of A266081.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..2..3..2..0..0....0..0..0..0..0....0..0..0..0..0....0..2..3..2..0
..3..4..3..0..0....0..0..0..0..0....0..2..3..2..0....0..3..4..3..0
..2..3..2..0..0....0..0..0..0..0....0..3..4..3..0....0..2..3..2..0
..0..0..0..0..0....0..0..0..0..0....0..2..3..2..0....0..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 20 2015
STATUS
approved