OFFSET
1,2
COMMENTS
Column 4 of A221321
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=7
..0....2....1....3....0....0....0....1....0....0....2....0....3....1....0....1
..3....0....3....2....2....1....1....0....1....1....1....5....0....0....2....2
..0....1....0....0....0....2....0....2....0....0....0....0....1....2....0....1
..1....3....2....1....1....1....2....1....1....3....1....1....0....0....2....0
..0....0....0....0....0....0....1....0....0....0....0....0....1....1....1....1
..1....1....1....1....1....1....0....1....5....3....2....1....0....3....2....0
..2....0....0....0....3....2....3....2....0....0....1....0....2....0....0....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 10 2013
STATUS
approved