A085633 - OEIS

A085633

Number of not necessarily connected coin graphs, also known as "penny" graphs.

1, 2, 4, 10, 25, 80, 267, 1078 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`The intersection graph of unit disks which are not allowed to overlap.`
	LINKS	`Table of n, a(n) for n=1..8.`
	CROSSREFS	`Cf. A085632.` `Sequence in context: A006901 A123422 A123413 * A111564 A350507 A007021` `Adjacent sequences: A085630 A085631 A085632 * A085634 A085635 A085636`
	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`

Last modified March 28 03:48 EDT 2023. Contains 361577 sequences. (Running on oeis4.)