OFFSET
1,2
COMMENTS
Column 3 of A199201
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..21
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..0....0..1..0....0..1..2....0..1..0....0..1..2....0..1..2
..2..3..1....2..3..2....2..3..1....1..2..3....1..2..3....1..0..3....3..2..3
..1..2..3....0..1..3....3..2..0....3..0..2....3..0..1....3..2..0....2..1..0
..2..3..0....3..2..1....1..3..2....1..3..0....2..3..2....1..3..2....1..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved