OFFSET
1,2
COMMENTS
Column 7 of A231246
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..1..2..3..0..3..2....0..1..2..1..0..3..0....0..1..2..1..0..3..2
..2..1..2..3..2..1..2....2..3..2..3..2..1..2....2..3..0..1..0..1..0
..0..3..0..3..2..1..0....0..1..0..1..0..3..2....0..1..2..3..2..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2013
STATUS
approved