OFFSET
1,4
COMMENTS
Column 1 of A199133
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Conjecture: a(3n) = A190917(n). - R. J. Mathar, Nov 01 2015
EXAMPLE
All solutions for n=5
..0....0....0....0....0....0
..1....1....1....1....1....1
..2....2....2....0....2....0
..0....1....0....2....1....1
..2....2....1....1....0....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved