OFFSET
1,2
COMMENTS
Column 7 of A230899
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
EXAMPLE
Some solutions for n=4
..0..1..0..1..2..3..0....0..1..2..1..0..3..0....0..1..2..1..0..3..2
..3..2..3..2..3..2..1....3..0..3..2..3..2..1....3..2..3..2..3..2..1
..2..1..0..3..0..1..0....2..1..0..1..0..3..2....0..3..0..1..0..3..0
..3..0..1..2..3..2..3....3..0..3..2..1..0..1....1..2..3..0..1..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 31 2013
STATUS
approved