OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=2
..2..2..1..2..2....1..0..0..2..2....1..2..2..1..0....1..1..1..2..0
..1..1..1..0..2....2..2..0..0..1....0..1..2..0..0....0..2..2..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2011
STATUS
approved