OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=2:
..0..1....0..1....1..2....0..1....1..2....1..2....0..2....0..2....0..2....0..1
..1..1....1..0....2..0....2..1....2..1....2..2....2..0....1..0....2..1....2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved