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A085632 Number of connected coin graphs, also known as "penny" graphs. 3
1, 1, 2, 5, 13, 46, 162, 715 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
The intersection graph of unit disks which are not allowed to overlap.
LINKS
Erich Friedman, Illustration for A085632
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

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)