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 A175611 #8 Jul 22 2016 13:22:17 %S A175611 2,3,5,7,31,127,8191,131071,524287,2147483647,2305843009213693951, %T A175611 618970019642690137449562111,162259276829213363391578010288127, %U A175611 170141183460469231731687303715884105727 %N A175611 Primes p such that A175599(p)=0. %C A175611 Primes p such that A043276(p)=A175597(p). %H A175611 Charles R Greathouse IV, <a href="/A175611/b175611.txt">Table of n, a(n) for n = 1..20</a> %Y A175611 Cf. A000668, A002450. %K A175611 nonn,base %O A175611 1,1 %A A175611 _Juri-Stepan Gerasimov_, Jul 24 2010 %E A175611 a(11)-a(14) from _Charles R Greathouse IV_, Jul 22 2016