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 A003524 #30 Jul 01 2020 15:31:40 %S A003524 1,3,5,7,9,13,15,21,35,39,45,63,65,91,105,117,195,273,315,455,585,819, %T A003524 1365,4095 %N A003524 Divisors of 2^12 - 1. %H A003524 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A003524 Divisors[2^12 - 1] (* _Alonso del Arte_, May 09 2020 *) %o A003524 (PARI) divisors(2^12-1) \\ _Charles R Greathouse IV_, Jun 21 2017 %o A003524 (Scala) (1 to 4095 by 2).filter(4095 % _ == 0) // _Alonso del Arte_, May 09 2020 %Y A003524 Cf. A334133. %K A003524 nonn,fini,full,easy %O A003524 1,2 %A A003524 _N. J. A. Sloane_