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 A173759 #7 Aug 17 2013 22:53:59 %S A173759 3,13,757,1093,797161 %N A173759 Prime numbers p such that 1/p is in the Cantor set. %C A173759 These are the prime numbers in A121153. Some of these primes are in A076481, the base-3 repunit primes, which have the form (3^n-1)/2. However, 757 has base-3 representation 1001001 and a base-27 representation 111. Are more exceptions? %C A173759 Contains A076481 as a subsequence, implying that a(6) <= A076481(4) = 3754733257489862401973357979128773. - _Max Alekseyev_, Aug 17 2013 %H A173759 Christian Salas, <a href="http://arxiv.org/abs/0906.0465">On Prime Reciprocals in the Cantor Set</a>, arXiv:0906.0465 [math.NT] %e A173759 3 is here because 1/3 can be written 0.02222222... %K A173759 more,nonn %O A173759 1,1 %A A173759 _T. D. Noe_, Feb 23 2010