OFFSET
1,3
COMMENTS
Column 6 of A183944
EXAMPLE
Some solutions for n=4
..0....4....0...-6....3...-3....1....4....0....5...-1....2....1....0...-1...-1
.-2....3....4....0....0....0....2....0...-6....0...-2....4....2...-1...-6....0
..0...-6....0....0...-3....3....1...-4....0...-5....2...-4...-2....0....3....1
..2...-1...-4....6....0....0...-4....0....6....0....1...-2...-1....1....4....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved