OFFSET
1,3
COMMENTS
Column 1 of A201873
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=10
..1....1....1...-1...-1....0...-1....1....0...-1...-1....1....0....0...-1...-1
..1....1....1....0....0....0....0....1...-1...-1...-1....1....1....0....0...-1
..0....0....1....0....0....0....1....0...-1...-1...-1....1....1...-1....0....0
.-1....0....0...-1....0....0....1....0....0....0....0....1....0...-1....0....0
.-1....0....0...-1....1....0....1....0....0....0....0....0...-1...-1....0....1
.-1....0...-1....0....1...-1....0....0....0....0....1....0...-1....0....1....1
.-1....0...-1....1....0...-1....0...-1....0....1....1...-1...-1....0....1....1
..0...-1...-1....1....0....0...-1...-1....0....1....0...-1....0....1....0....0
..1...-1....0....1....0....1...-1....0....1....1....0...-1....0....1....0....0
..1....0....0....0...-1....1....0....0....1....0....1...-1....1....1...-1...-1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2011
STATUS
approved