OFFSET
1,1
COMMENTS
Column 1 of A199832
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
All solutions for n=3
.-1....0....0....1
.-1....1...-1....1
..0....0....0....0
..1...-1....1...-1
..1....0....0...-1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 11 2011
STATUS
approved