OFFSET
1,2
COMMENTS
Column 4 of A208993.
EXAMPLE
Some solutions for n=6:
.-3...-3...-3...-2...-4...-1...-1...-3...-3...-3...-2...-3...-2...-3...-3...-3
..1....1....1....1....0...-1...-1...-1...-1....1....0....1...-2...-2....0....0
..2....1...-1...-1....2....1....0....2....2...-1....0....1...-2....1...-1....1
.-1....1....3...-1....2...-1....0....3....2....2....2....1....2....2....1....3
..1....0....1....3....1...-1....1....1....2....2....1...-1....2....3....2....1
..0....0...-1....0...-1....3....1...-2...-2...-1...-1....1....2...-1....1...-2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2012
STATUS
approved