OFFSET
1,2
COMMENTS
Column 6 of A278272.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=2
..0..1..1..0..0..1. .0..3..1..0..3..1. .0..1..2..1..0..2. .0..0..3..3..2..0
..0..2..3..3..2..1. .1..2..1..1..2..0. .2..3..1..3..3..1. .1..2..1..0..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 16 2016
STATUS
approved