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 A289728 #7 Jul 10 2017 22:51:50 %S A289728 19,47,83,397,1721,229627,21827567,295540237,13299311017,678264862267, %T A289728 3879320022245629336367,817800727933873464057151867, %U A289728 85869076433056713726000946867,9531467484069295223586105103117,15873007435437477980505511601565617 %N A289728 Primes of the form k!6-8, where k!6 is the sextuple factorial number (A085158). %H A289728 Robert Price, <a href="/A289728/b289728.txt">Table of n, a(n) for n = 1..26</a> %H A289728 Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n6-8&action=Search">PRP Records.Search for n!6-8.</a> %H A289728 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 A289728 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a> %t A289728 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; %t A289728 Select[Table[MultiFactorial[i, 6] - 8, {i, 8, 100}], PrimeQ[#]&] %Y A289728 Cf. A289686. %K A289728 nonn %O A289728 1,1 %A A289728 _Robert Price_, Jul 10 2017