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 A238681 #4 Mar 02 2014 18:27:55 %S A238681 89,271,137,449,1087,1559,647,2677,1831,2297,11119,1787,1567,14071, %T A238681 1511,14653,29473,2399,25943,15307,32993,5309,35977,35963,10457, %U A238681 130069,11801,10831,333673,15451,153529,62497,45677,75389,196699,66383,20411,393097,76631 %N A238681 Ninth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n. %H A238681 Alois P. Heinz, <a href="/A238681/b238681.txt">Table of n, a(n) for n = 1..100</a> %Y A238681 Row n=9 of A238086. %K A238681 nonn %O A238681 1,1 %A A238681 _Alois P. Heinz_, Mar 02 2014