OFFSET
1,2
COMMENTS
Column 5 of A208970.
EXAMPLE
Some solutions for n=5:
.-1...-2...-1...-2...-1...-2...-1...-3...-2...-2...-3....0...-2...-2...-2...-3
..0...-1...-1....0...-1...-2...-1...-1....0....0...-2....0...-1...-2...-1...-2
.-1....2....0....2....1...-2....0....2....0....1....1....0...-1....1....1....2
..1....1....2...-1....0....3....0....2....2....1....3....0....2....1....2....2
..1....0....0....1....1....3....2....0....0....0....1....0....2....2....0....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 03 2012
STATUS
approved