OFFSET
2,2
COMMENTS
LINKS
P. Erdős and R. K. Guy, Distinct distances between lattice points, Elemente der Mathematik 25 (1970), 121-123.
H. Lefmann and T. Thiele, Point sets with distinct distances, Serie B Informatik, B 94-16, 1994.
H. Lefmann and T. Thiele, Point sets with distinct distances, Combinatorica (1995) 15: 379.
CROSSREFS
KEYWORD
nonn,frac,hard,more
AUTHOR
Hugo Pfoertner, Jul 30 2011
STATUS
approved