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 A106305 #22 Nov 14 2017 15:02:14 %S A106305 1,3,9,11,33,99,239,717,2151,2629,4649,7887,13947,23661,41841,51139, %T A106305 153417,460251,909091,1111111,2727273,3333333,8181819,9999999, %U A106305 10000001,12222221,30000003,36666663,90000009,109999989,217272749,651818247 %N A106305 Divisors of 10^14 - 1. %H A106305 Nathaniel Johnston, <a href="/A106305/b106305.txt">Table of n, a(n) for n = 1..48</a> (full sequence) %H A106305 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %F A106305 10^14 - 1 = 3^2 * 11 * 239 * 4649 * 909091 = 99999999999999. - _Alonso del Arte_, Nov 09 2017 %t A106305 Divisors[10^14 - 1] (* _Harvey P. Dale_, Feb 01 2015 *) %o A106305 (PARI) divisors(10^14-1) \\ _Charles R Greathouse IV_, Jun 21 2017 %Y A106305 Cf. A018282, A018766, A027894, A027893, A027892, A027891, A027890, A027889, A027895, A027896, A027897, A109933, A001270, A007138, A046107, A112505. %K A106305 nonn,fini,full,easy %O A106305 1,2 %A A106305 Douglas Winston (douglas.winston(AT)srupc.com), Oct 12 2005