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 A018609 #23 Dec 28 2014 09:50:42 %S A018609 1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,30,36,40,45,48,60,72,80,90,120, %T A018609 144,180,240,360,720 %N A018609 Divisors of 720. %C A018609 720 is a highly composite number: A002182(14)=720. - _Reinhard Zumkeller_, Jun 21 2010 %H A018609 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A018609 Divisors[720] (* _Vladimir Joseph Stephan Orlovsky_, Nov 19 2010 *) %o A018609 (PARI) divisors(720) %Y A018609 Cf. A018253, A018256, A018261, A018266, A018293, A018321, A018350, A018412, A018676, A178877, A178878, A165412, A178858, A178859, A178860, A178861, A178862, A178863, A178864. - _Reinhard Zumkeller_, Jun 21 2010 %K A018609 nonn,fini,full,easy %O A018609 1,2 %A A018609 _N. J. A. Sloane_