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 A238680 #4 Mar 02 2014 18:24:10 %S A238680 83,241,131,251,991,1553,461,2617,1733,1877,11083,1667,1487,13831, %T A238680 1277,14419,26407,2381,23993,7687,30089,4241,30259,27361,9281,127423, %U A238680 11471,10601,290419,15227,125753,62299,43451,55103,192037,61553,14741,358447,63839,98927 %N A238680 Eighth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n. %H A238680 Alois P. Heinz, <a href="/A238680/b238680.txt">Table of n, a(n) for n = 1..100</a> %Y A238680 Row n=8 of A238086. %K A238680 nonn %O A238680 1,1 %A A238680 _Alois P. Heinz_, Mar 02 2014