OFFSET
1,2
COMMENTS
Column 2 of A187988
EXAMPLE
All solutions for n=3
.-1...-2...-3...-2...-1
..0....1....2...-2...-1
..0....1....2....3....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 18 2011
EXTENSIONS
More terms from R. J. Mathar, May 11 2023
STATUS
approved