OFFSET
1,2
COMMENTS
Column 3 of A211836
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..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....0....0....2....2....2....1....2....2....0....2....2....2....2....2....0
..3....1....2....0....3....2....2....3....3....2....3....3....0....2....3....2
..1....2....2....3....2....3....3....1....4....3....1....0....2....3....4....3
..4....3....3....4....0....0....1....3....5....4....2....3....3....4....5....4
..3....4....4....2....4....4....4....4....4....3....4....4....4....4....3....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 21 2012
STATUS
approved