OFFSET
1,2
COMMENTS
Column 3 of A201847
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..52
EXAMPLE
Some solutions for n=5
.-1.-1..1...-1..0..1....1..0..0....1.-1.-1....0..0..0....1..0..0...-1.-1.-1
..0..0..1...-1..0..1....1..0.-1....1..0..0....0..0..0....1..1..1....1.-1..1
..0..1..1...-1..0..1....0.-1.-1....1.-1..0....0.-1..0...-1.-1..1....1.-1..1
.-1..0..0....0..0..1....0.-1.-1....0.-1.-1....1.-1..0...-1.-1.-1....0.-1..1
.-1..0..0...-1.-1..1....1..1..1....0..1..1....1..0..0....0..0..0....0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2011
STATUS
approved