OFFSET
1,1
COMMENTS
Column 3 of A202047
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..67
EXAMPLE
Some solutions for n=5
..1.-1..0....1..0..0...-1.-1..1....1..1.-1...-1..1..0....1.-1.-1...-1..0..1
.-1.-1.-1....1..0..0...-1..1..1...-1.-1.-1....1..1.-1....0..0.-1....1..0..1
..1.-1.-1....0..0..0...-1..1..1....1..1..1....1..1.-1....0..0..0....1..0..0
..1..1..1...-1.-1.-1...-1..0..0....1.-1.-1...-1.-1.-1....0..0..0....0..0..0
..0..0..1....0..0..1....0..0..0....1.-1..0....0..0..1....1..1..0...-1.-1.-1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2011
STATUS
approved