OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..37
EXAMPLE
Some solutions for n=5
..2...-2....0...-1...-2...-1....1...-1...-2....0....1....1....1...-2....2...-2
.-1...-2...-1...-1....2...-1....0....1...-2....1....1....2...-2...-1....0....0
.-2....1...-2...-1...-2....1...-1...-1...-1...-2....2....1....2....2...-2...-1
..1...-2...-1...-2....2....1....2....0....0....1....2....0....2....1...-1...-2
..0...-2...-2...-2...-2....1...-1...-1...-1...-2....2....1...-2....2...-2....0
.-1...-2...-2...-1...-1...-1....0....2....0...-1....1...-1....2....1....0...-2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 16 2012
STATUS
approved