OFFSET
1,1
COMMENTS
Column 4 of A279925.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..58
EXAMPLE
Some solutions for n=3
..0..1..0..0. .0..1..0..1. .0..1..1..1. .0..1..2..0. .0..1..1..1
..1..0..1..0. .1..2..2..1. .1..2..1..0. .0..0..1..0. .2..1..0..1
..0..0..1..0. .0..2..1..1. .0..0..2..1. .0..1..2..2. .0..2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 23 2016
STATUS
approved