OFFSET
1,1
COMMENTS
Column 6 of A201847
EXAMPLE
Some solutions for n=2
..1.-1.-1.-1..1..0....1.-1.-1..0..0.-1...-1.-1..0..1..1..0...-1..0..1..1.-1..0
..1.-1.-1..1..1..0....1.-1..1..1..1.-1....1..1..0.-1.-1..0...-1..0..1..1.-1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2011
STATUS
approved