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 A358231 #5 Nov 24 2022 19:52:10
%S A358231 2,4,12,16,24,47,54,72,120,142,144,432,540,864,972,1049,1260,1916,
%T A358231 2628,10152,12798,19024,20304,100565,152668,209760,445362,2071560,
%U A358231 2759034,3344269,85167240,92667148,111135679,118344316,162716506,264678868,599478496
%N A358231 Numbers k for which A276086(k) == 1 (mod k), where A276086 is the primorial base exp-function.
%H A358231 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%o A358231 (PARI)
%o A358231 A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
%o A358231 isA358231(n) = (1==(A276086(n)%n));
%Y A358231 Positions of 1's in A328386.
%Y A358231 Cf. A276086, A328387.
%K A358231 nonn
%O A358231 1,1
%A A358231 _Antti Karttunen_, Nov 24 2022