OFFSET
1,2
COMMENTS
Column 5 of A277788.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..1..1..2..1. .0..1..1..2..0. .0..1..0..2..0. .0..1..1..2..1
..2..0..1..0..1. .2..0..0..1..1. .2..1..1..0..1. .2..0..1..0..2
..0..1..1..2..2. .2..1..2..0..2. .0..2..0..2..1. .1..1..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 31 2016
STATUS
approved