OFFSET
1,1
COMMENTS
Column 1 of A223406
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..83
EXAMPLE
Some solutions for n=3
..0....2....3....3....3....3....2....1....0....2....3....2....2....1....1....0
..1....1....0....1....2....3....0....1....1....1....0....2....1....1....0....0
..2....0....2....3....1....3....0....1....3....3....3....2....1....2....0....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved