OFFSET

1,4

COMMENTS

Column 1 of A201847

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=9

..0....0...-1....0....0....1....1....0....0....0...-1....0....1....0....1....0

..0....0...-1....0....0....1....1....0....0....0...-1....0....1....0....1....0

..0....0...-1....0...-1...-1....1....0....0....0...-1...-1....0....1....0....0

..1....0....0....1...-1...-1...-1...-1....1...-1....1...-1....0....1....0...-1

..1....0....0....1....0....0...-1...-1....1...-1....1....1....0...-1...-1...-1

..1...-1....0....0....0....0...-1....1...-1...-1....1....1....0...-1...-1....0

.-1...-1....1....0....0....0....0....1...-1....1....0....0....0....0....0....0

.-1....1....1...-1....1....0....0....0....0....1....0....0...-1....0....0....1

.-1....1....1...-1....1....0....0....0....0....1....0....0...-1....0....0....1

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 06 2011

STATUS

approved