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