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 A003529 #20 Oct 21 2023 23:34:34 %S A003529 1,3,5,11,15,25,31,33,41,55,75,93,123,155,165,205,275,341,451,465,615, %T A003529 775,825,1023,1025,1271,1353,1705,2255,2325,3075,3813,5115,6355,6765, %U A003529 8525,11275,13981,19065,25575 %N A003529 Divisors of 2^20 - 1. %H A003529 T. D. Noe, <a href="/A003529/b003529.txt">Table of n, a(n) for n = 1..48</a> (all divisors) %H A003529 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A003529 Divisors[2^20-1] (* _Harvey P. Dale_, May 07 2013 *) %o A003529 (PARI) divisors(2^20-1) \\ _Charles R Greathouse IV_, Jun 21 2017 %K A003529 nonn,fini,full,easy %O A003529 1,2 %A A003529 _N. J. A. Sloane_