OFFSET
1,2
COMMENTS
Column 2 of A208825.
EXAMPLE
All solutions for n=3:
.-2...-1...-1...-2....0
..1....0...-1....0....0
..1....1....2....2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2012
STATUS
approved