OFFSET
1,1
COMMENTS
Column 5 of A202047
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..19
EXAMPLE
Some solutions for n=3
.-1..0..0..0..1...-1.-1..1.-1.-1....1..1..0..0..1...-1..1.-1.-1.-1
..1..1..1..0..0....1..1..1..0..0...-1.-1.-1..0..0...-1..1..1..1..1
.-1.-1..1.-1.-1....1..0..0..0.-1....1..1.-1..0.-1....1..1.-1.-1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 10 2011
STATUS
approved