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 A290118 #11 Apr 16 2025 09:56:41
%S A290118 23,7983359,95800319,4184557977599,
%T A290118 74398665357980243493599889630167039999999,
%U A290118 6690505322632761421634012410688150333030399999999,281001223550575979708628521248902313987276799999999,51724648302233636128592871030722395993839526477823999999999
%N A290118 Primes of the form k!/5 - 1.
%H A290118 Robert Price, <a href="/A290118/b290118.txt">Table of n, a(n) for n = 1..8</a>
%H A290118 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 A290118 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>.
%F A290118 a(n) = A139175(A139200(n)). - _Elmo R. Oliveira_, Apr 15 2025
%t A290118 Select[Table[k! / 5 - 1, {k, 5, 100}], PrimeQ[#]&]
%Y A290118 Cf. A139175, A139200.
%K A290118 nonn
%O A290118 1,1
%A A290118 _Robert Price_, Jul 19 2017