OFFSET
1,2
COMMENTS
Column 6 of A211849.
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....0....1....0....1....1....1....1
..1....1....1....1....1....1....1....0....1....1....0....1....1....1....0....1
..2....1....2....2....2....2....2....0....2....1....0....1....2....2....0....2
..2....2....2....2....2....2....2....2....2....1....2....2....2....2....2....2
..3....2....3....3....3....3....3....2....3....2....2....2....3....3....2....3
..2....3....3....3....3....3....3....3....3....2....2....3....3....2....3....3
..3....3....4....4....3....3....4....3....4....3....3....3....4....2....3....4
..3....4....4....4....4....3....4....4....4....3....3....4....4....4....4....3
..4....4....5....4....4....4....1....4....4....4....4....4....5....4....4....4
..4....5....5....5....5....4....1....4....5....4....4....4....4....5....5....4
..5....5....3....5....5....5....5....5....5....5....5....5....4....5....5....5
..5....5....3....5....6....5....5....5....6....5....5....5....6....6....6....5
..6....6....6....6....6....6....6....6....6....6....6....6....6....5....6....6
..6....6....6....6....6....6....6....6....6....6....6....6....7....5....7....6
..7....7....7....7....7....7....7....7....7....7....7....7....6....7....6....7
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 22 2012
STATUS
approved