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 A238674 #4 Mar 02 2014 15:46:19 %S A238674 5,31,47,41,331,523,293,277,191,197,2389,877,811,4111,587,2609,5437, %T A238674 1481,6673,1483,12809,1907,5689,13331,3677,25939,4457,3593,162973, %U A238674 6089,38603,33091,26693,16883,65557,19259,5657,49711,23081,25657,480409,17837,21517 %N A238674 Second prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n. %H A238674 Alois P. Heinz, <a href="/A238674/b238674.txt">Table of n, a(n) for n = 1..100</a> %Y A238674 Row n=2 of A238086. %K A238674 nonn %O A238674 1,1 %A A238674 _Alois P. Heinz_, Mar 02 2014