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 A289490 #8 Sep 02 2017 19:27:39
%S A289490 11,13,29,53,239,593,65843,1514213,5221133,4996616633,1729986783533,
%T A289490 7579867420133,36453104912477522894633,2442358029135994033939883,
%U A289490 173407420068655576409731133,534602198949923693866675351078133,7419136758370889359733910587728133
%N A289490 Primes of the form k!4+8, where k!4 is the quadruple factorial number (A007662).
%H A289490 Robert Price, <a href="/A289490/b289490.txt">Table of n, a(n) for n = 1..22</a>
%H A289490 Henri& Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n4+8&action=Search">PRP Records.Search for n!4+8.</a>
%H A289490 Joe McLean, <a href="http://web.archive.org/web/20091027034731/http://uk.geocities.com/nassarawa%40btinternet.com/probprim2.htm">Interesting Sources of Probable Primes</a>
%H A289490 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%t A289490 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t A289490 Select[Table[MultiFactorial[i, 4] + 8, {i, 0, 100}], PrimeQ[#]&]
%Y A289490 Cf. A291343.
%K A289490 nonn
%O A289490 1,1
%A A289490 _Robert Price_, Sep 02 2017