A085632 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A085632

Number of connected coin graphs, also known as "penny" graphs.

%I #8 Apr 22 2013 14:53:06

%S 1,1,2,5,13,46,162,715

%N Number of connected coin graphs, also known as "penny" graphs.

%C The intersection graph of unit disks which are not allowed to overlap.

%H Erich Friedman, <a href="/A085632/a085632.gif">Illustration for A085632</a>

%Y Cf. A085633.

%K more,nonn

%O 1,3

%A Leah Hackman (lhackman(AT)cs.ualberta.ca), Martha Lednicky (lednicky(AT)cs.ualberta.ca), _Jim Nastos_ and _Rick L. Shepherd_, Jul 10 2003