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 A353466 #5 Apr 24 2022 09:17:14
%S A353466 2,8,14,20,26,30,34,36,40,42,46,48,52,54,58,62,68,74,80,86,90,94,96,
%T A353466 100,102,106,108,112,114,118,122,128,134,140,146,150,154,156,160,162,
%U A353466 166,168,172,174,178,182,188,194,200,206,210,214,216,220,222,226,228,232,234,238,242,248,254,260,266,270,274,276
%N A353466 Numbers k for which A276086(k) is of the form 4k+3.
%H A353466 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%o A353466 (PARI)
%o A353466 A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
%o A353466 A353489(n) = (3==(A276086(n)%4));
%o A353466 isA353466(n) = A353489(n);
%Y A353466 Cf. A276086, A353486, A353489 (characteristic function).
%Y A353466 Sequences A005408, A353465 and this sequence partition the natural numbers to three disjoint sets.
%K A353466 nonn,base
%O A353466 1,1
%A A353466 _Antti Karttunen_, Apr 24 2022