OFFSET
1,2
COMMENTS
Column 2 of A199847
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=6
..2...-1....2....1....2....1....1....1....1...-1....2....1....1....1....1....1
..1....0....0...-1....1....1....2....1...-1....0....2....1....1....2....0....0
.-2....1....1....0....2....0....0....0...-1....1...-2....1....1....1....0...-1
.-1....0...-2....0...-1...-1....0....1....0....1...-1....0...-1...-1....0....0
..0....1...-1....0...-2....0...-2...-2....0....1...-1...-1....0...-1....1....0
..0...-1....0....0...-2...-1...-1...-1....1...-2....0...-2...-2...-2...-2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 11 2011
STATUS
approved