OFFSET
1,1
COMMENTS
Column 3 of A200713.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..23
EXAMPLE
Some solutions for n=4
..0..4..7....0..0..3....0..0..1....0..0..1....0..0..0....0..2..2....0..2..2
..0..4..7....0..0..5....0..4..3....0..0..4....0..2..1....0..2..7....0..4..7
..0..6..7....0..4..6....0..2..3....0..0..5....0..4..3....0..4..6....0..4..7
..1..6..7....0..3..7....0..5..3....2..2..7....0..5..4....0..4..5....0..6..6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 20 2011
STATUS
approved