OFFSET
1,1
COMMENTS
Column 6 of A219128
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=3
..2..1..0..1..0..0....0..0..0..0..0..0....0..0..1..0..2..2....0..0..0..0..0..2
..0..1..0..0..0..1....0..0..0..0..0..0....1..0..0..0..1..0....0..0..0..1..0..0
..0..0..0..2..0..2....0..0..2..0..1..0....2..0..1..0..0..0....0..0..2..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 12 2012
STATUS
approved