OFFSET
1,1
COMMENTS
Column 4 of A201847.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..25
EXAMPLE
Some solutions for n=4
..0..1..1..0...-1..1..0..0...-1.-1.-1..1....1.-1.-1..1....0.-1.-1.-1
..0..1..0..0...-1..1.-1.-1....0..1..1..1....1.-1..1..1....0..0..0.-1
.-1..1..0..0...-1.-1..1..1....0..1.-1..1...-1.-1..1..1....1..1..0..0
.-1.-1.-1..0....1..1..0..0...-1.-1.-1..1...-1.-1.-1..1....0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2011
STATUS
approved