OFFSET
1,6
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..100
EXAMPLE
All solutions for n=8:
.-1...-1....0...-1
.-1...-1....0...-1
..0....0....0...-1
..0....0....0....0
..1....0....0....1
..1....1....0....1
..0....1....0....1
..0....0....0....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 03 2012
EXTENSIONS
a(34)-a(42) from Andrew Howroyd, Mar 12 2017
STATUS
approved