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 A217134 #9 Feb 04 2014 00:53:08 %S A217134 2,4,10,14,88,112,140,764,3040,11096,24934,25616,54584,93400 %N A217134 Numbers n such that 5^n - 8 is prime. %C A217134 a(15) > 10^5. - _Robert Price_, Feb 03 2014 %t A217134 Select[Range[2, 5000], PrimeQ[5^# - 8] &] %o A217134 (PARI) for(n=2, 5*10^3, if(isprime(5^n-8), print1(n", "))) %Y A217134 Cf. A059613, A087885, A089142, A109080, A124621, A165701. %K A217134 nonn %O A217134 1,1 %A A217134 _Vincenzo Librandi_, Oct 01 2012 %E A217134 a(10)-a(14) from _Robert Price_, Feb 03 2014