OFFSET
1,2
COMMENTS
Column 5 of A278272.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..87
EXAMPLE
Some solutions for n=2
..0..1..2..0..1. .0..1..2..3..1. .0..1..3..1..3. .0..2..2..1..3
..3..1..3..2..1. .2..3..0..2..2. .3..2..0..2..0. .1..3..0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 16 2016
STATUS
approved