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 A180629 #22 Jul 12 2024 01:13:47
%S A180629 0,1,3,4,8,33,121,177,190,276,473,484,924,937,1722,2626,4077,4464,6166
%N A180629 Numbers k such that 8*k! - 1 is prime.
%C A180629 Tested to 4700. - _Robert G. Wilson v_, Sep 27 2010
%C A180629 Tested to 5127. - _Jinyuan Wang_, Feb 03 2020
%C A180629 Tested to 12000. - _Michael S. Branicky_, Jul 11 2024
%H A180629 <a href="/index/Pri#primepop">Index entries for sequences related to numbers of primes of the form k*n!+-1</a>
%t A180629 fQ[n_] := PrimeQ[8 n! - 1]; k = 0; lst = {}; While[k < 1501, If[ fQ@k, AppendTo[lst, k]; Print@k]; k++ ]; lst
%o A180629 (PARI) is(k) = ispseudoprime(8*k!-1); \\ _Jinyuan Wang_, Feb 03 2020
%Y A180629 Cf. A002982, A076133, A076134, A099350, A099351, A180627, A180628, A180630, A180631.
%K A180629 nonn,more
%O A180629 1,3
%A A180629 _Robert G. Wilson v_, Sep 13 2010
%E A180629 a(15)-a(18) from _Robert G. Wilson v_, Sep 27 2010
%E A180629 a(19) from _Michael S. Branicky_, May 27 2023