OFFSET
1,1
COMMENTS
Column 4 of A219828
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..187
EXAMPLE
Some solutions for n=3
..0..0..1..3....0..0..0..0....0..0..2..2....0..0..1..0....0..0..1..3
..0..0..0..0....0..0..0..0....0..0..0..0....1..0..0..0....1..0..0..0
..1..0..0..0....3..2..2..3....0..0..0..0....1..0..2..0....1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 28 2012
STATUS
approved