OFFSET
1,3
COMMENTS
The intersection graph of unit disks which are not allowed to overlap.
LINKS
Erich Friedman, Illustration for A085632
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Leah Hackman (lhackman(AT)cs.ualberta.ca), Martha Lednicky (lednicky(AT)cs.ualberta.ca), Jim Nastos and Rick L. Shepherd, Jul 10 2003
STATUS
approved