login
A085632
Number of connected coin graphs, also known as "penny" graphs.
3
1, 1, 2, 5, 13, 46, 162, 715
OFFSET
1,3
COMMENTS
The intersection graph of unit disks which are not allowed to overlap.
CROSSREFS
Cf. A085633.
Sequence in context: A000719 A149875 A221546 * A111563 A079573 A360513
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