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 A018444 #18 Jul 08 2025 06:50:03 %S A018444 1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420 %N A018444 Divisors of 420. %H A018444 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A018444 Divisors[420] (* _Vladimir Joseph Stephan Orlovsky_, Feb 21 2012 *) %o A018444 (PARI) divisors(420) \\ _Charles R Greathouse IV_, Jun 21 2017 %K A018444 nonn,fini,full,easy %O A018444 1,2 %A A018444 _N. J. A. Sloane_