OFFSET
1,3
COMMENTS
Column 2 of A199523
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..41
EXAMPLE
Some solutions for n=3
..0..1....0..1....0..1....0..1....0..1....0..0....0..1....0..1....0..1....0..1
..2..2....0..2....2..3....2..3....2..3....1..1....2..3....1..0....2..3....1..2
..3..1....3..3....3..1....2..0....1..3....2..3....0..2....2..3....3..2....2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 07 2011
STATUS
approved