OFFSET
1,2
COMMENTS
Column 7 of A203846
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..12
EXAMPLE
Some solutions for n=4
..1..2..2..1..2..2..0....1..1..2..2..0..1..1....3..3..0..2..3..3..3
..3..3..2..0..2..2..1....1..1..2..2..0..1..1....3..3..0..3..3..2..3
..3..3..2..3..3..3..1....2..2..3..3..1..2..2....1..1..2..3..2..0..3
..3..3..1..3..3..3..0....2..2..3..3..0..2..2....1..1..2..3..3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 06 2012
STATUS
approved