OFFSET
1,2
COMMENTS
Column 5 of A209007.
EXAMPLE
Some solutions for n=6:
.-3...-1...-4...-3...-3...-3...-3...-2...-4...-2...-2...-3...-2...-4...-4...-4
..0...-1...-2...-3...-3...-3...-2....0...-2....0...-1...-3....0...-3...-1...-1
..3...-1....3....2....0....0....1....2....1....0....0....2....1...-1....2....0
..1....0....3....2....3....4....0...-1....4....1....0....3....0....4....3....4
..0....1....2....2....3....3....3....0....2....2....2....0....1....4....2....3
.-1....2...-2....0....0...-1....1....1...-1...-1....1....1....0....0...-2...-2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2012
STATUS
approved