OFFSET
1,2
COMMENTS
Column 7 of A300175.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0..0. .0..0..1..1..1..1..1. .0..0..0..0..1..1..1
..0..0..0..1..0..0..0. .0..0..1..1..0..1..0. .0..0..0..1..0..1..1
..0..0..1..1..1..1..0. .0..0..1..0..1..0..0. .0..0..0..1..1..0..0
..0..0..0..1..0..1..0. .0..0..0..0..1..0..0. .0..0..0..0..1..1..0
..0..0..0..0..1..0..0. .0..0..0..0..1..1..0. .0..0..0..0..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2018
STATUS
approved