OFFSET
1,5
COMMENTS
Column 1 of A199201
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..148
EXAMPLE
Some solutions for n=7
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....2....0....0....2....0....2....2....2....2....2....2....2....2....2....2
..0....0....2....2....3....1....3....1....1....3....0....3....3....3....3....1
..2....3....3....1....2....2....1....3....2....0....1....1....2....1....0....0
..3....2....1....2....1....3....0....0....0....2....3....3....0....2....3....3
..1....1....2....3....3....2....3....3....3....1....2....2....1....0....1....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved