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 A238676 #4 Mar 02 2014 16:07:48 %S A238676 19,43,61,163,457,769,389,937,311,887,4003,953,1049,8101,719,8969, %T A238676 6793,1847,7823,4549,18899,2267,16087,20921,4127,56149,8387,5189, %U A238676 177109,9257,61493,36451,34807,30491,92941,39569,10181,141961,45971,64067,497899,33347 %N A238676 Fourth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n. %H A238676 Alois P. Heinz, <a href="/A238676/b238676.txt">Table of n, a(n) for n = 1..100</a> %Y A238676 Row n=4 of A238086. %K A238676 nonn %O A238676 1,1 %A A238676 _Alois P. Heinz_, Mar 02 2014