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 A115449 #8 Sep 16 2015 00:34:16 %S A115449 1,2,3,8,12,23,27,42,68,75,86,96,113,117,125,135,140,146,168,182,185, %T A115449 188,191,198,233,245,255,267,281,287,297,306,311,318,327,360,362,366, %U A115449 377,390,392,395,408,416,423,432,447,456,465,486,488,497,516,531,555 %N A115449 Numbers n such that 4*n^5 - 1 is prime. %e A115449 If n=96 then (4*n^5 - 1) = 32614907903 (prime). %t A115449 Select[Range[500], PrimeQ[4*#^5 - 1] &] (* _Stefan Steinerberger_, Mar 09 2006 *) %o A115449 (PARI) for(i=1,2000,if(isprime(4*i^5-1),print1(i,","))) \\ _Matthew Conroy_, Mar 12 2006 %o A115449 (PARI) for(i=1,2000,if(isprime(4*i^5-1),print1(i,","))) \\ _Matthew Conroy_, Mar 12 2006 %Y A115449 Cf. A115104, A001912. %K A115449 nonn %O A115449 1,2 %A A115449 _Parthasarathy Nambi_, Mar 08 2006 %E A115449 More terms from _Stefan Steinerberger_, _Zak Seidov_ and _Matthew Conroy_, Mar 12 2006 %E A115449 More terms from _Matthew Conroy_, Mar 12 2006