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 A290123 #15 Apr 16 2025 19:41:35
%S A290123 11,71,503,3991679,622702079,35568742809599,
%T A290123 30488834461171386050150399999,
%U A290123 579712602074736798587973423157810910541235724473162595874586504971639017969389205625618453424974594047999999999999999999
%N A290123 Primes of the form k!/10 - 1.
%H A290123 Robert Price, <a href="/A290123/b290123.txt">Table of n, a(n) for n = 1..9</a>
%H A290123 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 A290123 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>.
%F A290123 a(n) = A139185(A139205(n)). - _Elmo R. Oliveira_, Apr 16 2025
%t A290123 Select[Table[k! / 10 - 1, {k, 5, 100}], PrimeQ[#]&]
%Y A290123 Cf. A139185, A139205, A290116, A290117, A290118, A290119, A290120, A290121, A290122.
%K A290123 nonn
%O A290123 1,1
%A A290123 _Robert Price_, Jul 19 2017
%E A290123 Missing terms inserted by _Alois P. Heinz_, Dec 05 2024