OFFSET
1,1
COMMENTS
Column 7 of A218522
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..53
EXAMPLE
Some solutions for n=3
..0..0..0..0..0..3..3....0..0..0..0..1..0..0....0..0..0..0..0..0..1
..0..0..0..0..1..2..2....0..0..0..1..2..0..0....0..0..0..0..1..0..0
..0..0..0..2..3..1..1....0..1..3..2..1..0..1....0..0..2..3..1..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 31 2012
STATUS
approved