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 A290119 #18 Apr 16 2025 09:03:58
%S A290119 3,19,839,6719,6652799,14529715199,3487131647999,59281238015999,
%T A290119 1067062284287999,405483668029439999,
%U A290119 10069210510562305939559188678085666251210751999999999,5069015533618896340602101361010794807396273594826751999999999999
%N A290119 Primes of the form k!/6 - 1.
%H A290119 Robert Price, <a href="/A290119/b290119.txt">Table of n, a(n) for n = 1..14</a>
%H A290119 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 A290119 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>.
%F A290119 a(n) = A139176(A139201(n)). - _Elmo R. Oliveira_, Apr 15 2025
%t A290119 Select[Table[k! / 6 - 1, {k, 4, 100}], PrimeQ[#]&]
%Y A290119 Cf. A139176, A139201.
%K A290119 nonn
%O A290119 1,1
%A A290119 _Robert Price_, Jul 19 2017
%E A290119 3, 19 inserted by _Georg Fischer_, Dec 05 2024