OFFSET
1,2
COMMENTS
Column 2 of A200057
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=6
.-1...-1....0....2....0....0....0....0....0...-2....0....0....1...-1...-2...-2
..1...-2...-1....1....1...-1....1....1...-1....1....2...-2....2....1....1....1
..0....2....0....2...-2....2...-2...-1....1...-1...-2....0...-2....0....0...-1
..2...-2...-1...-2....0...-2....1....0....0....1....0...-1....2....1....1....1
.-2....2....2...-1...-1....1...-2...-2....1....0...-1....2...-2...-1...-2...-1
..0....1....0...-2....2....0....2....2...-1....1....1....1...-1....0....2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 13 2011
STATUS
approved