This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A085633 #6 Apr 22 2013 14:59:21 %S A085633 1,2,4,10,25,80,267,1078 %N A085633 Number of not necessarily connected coin graphs, also known as "penny" graphs. %C A085633 The intersection graph of unit disks which are not allowed to overlap. %Y A085633 Cf. A085632. %K A085633 more,nonn %O A085633 1,2 %A A085633 Leah Hackman (lhackman(AT)cs.ualberta.ca), Martha Lednicky (lednicky(AT)cs.ualberta.ca), _Jim Nastos_ and _Rick L. Shepherd_, Jul 10 2003