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 A289727 #7 Jul 10 2017 22:51:42
%S A289727 929,1723,21499,1339969,49579069,42061737019,8549258359016369,
%T A289727 815970262367657972299041020065569977629234369,
%U A289727 128107331191722301650949440150294486487789796869,320745817436192067170665942374782284454205305520925161570651550901795210373583984369
%N A289727 Primes of the form k!6-6, where k!6 is the sextuple factorial number (A085158).
%H A289727 Robert Price, <a href="/A289727/b289727.txt">Table of n, a(n) for n = 1..13</a>
%H A289727 Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n6-6&action=Search">PRP Records.Search for n!6-6.</a>
%H A289727 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 A289727 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%t A289727 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t A289727 Select[Table[MultiFactorial[i, 6] - 6, {i, 6, 100}], PrimeQ[#]&]
%Y A289727 Cf. A289685.
%K A289727 nonn
%O A289727 1,1
%A A289727 _Robert Price_, Jul 10 2017