OFFSET
1,2
COMMENTS
Column 2 of A184703
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
All solutions for n=4
..0....1....0....0....2....2....1
..2....0....0....1....1....0....2
..0....1....0....2....0....2....1
..1....1....2....0....1....0....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 20 2011
STATUS
approved