OFFSET
1,2
COMMENTS
Column 3 of A199256
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..28
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..2....0..1..2....0..1..2....0..1..2....0..1..0....0..1..2
..2..0..3....3..2..3....3..2..1....3..2..0....2..3..0....2..3..1....1..3..0
..1..3..2....2..3..1....0..3..0....1..3..2....3..0..1....3..0..2....3..1..2
..2..1..3....0..1..0....2..1..3....0..1..3....1..2..3....1..2..3....2..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved