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 A289825 #8 Feb 25 2025 08:59:39
%S A289825 1047511,4129751,24285271,2504843351,126757680265156951,
%T A289825 7368624314106569113540951,38900816605808456499140951,
%U A289825 663800167477016615356604425212847831700575205814331164458540403251687739883519999999940951
%N A289825 Primes of the form k!3 - 59049, where k!3 is the triple factorial number (A007661).
%H A289825 Robert Price, <a href="/A289825/b289825.txt">Table of n, a(n) for n = 1..9</a>
%H A289825 Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n3-59049&action=Search">PRP Records.Search for n!3-59049</a>.
%H A289825 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 A289825 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>.
%F A289825 a(n) = A007661(A265201(n)) - 59049. - _Elmo R. Oliveira_, Feb 25 2025
%t A289825 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t A289825 Select[Table[MultiFactorial[i, 3] - 59049, {i, 17, 100}], PrimeQ[#]&]
%Y A289825 Cf. A007661, A265201.
%K A289825 nonn
%O A289825 1,1
%A A289825 _Robert Price_, Jul 12 2017