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 A290005 #20 Jun 17 2025 02:59:57
%S A290005 41,59,113,761,94143178859,282429536513,1350851717672992121,
%T A290005 1769643454279976222562683176742209046547931058497932902345838739841697520771313,
%U A290005 11610630703530923996233764322605633554400975674804937772291047972101377433780374673
%N A290005 Primes of the form 3^k + 32.
%H A290005 Robert Price, <a href="/A290005/b290005.txt">Table of n, a(n) for n = 1..14</a>
%H A290005 F. Firoozbakht and M. F. Hasler, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL13/Hasler/hasler2.html">Variations on Euclid's formula for Perfect Numbers</a>, JIS 13 (2010) #10.3.1.
%H A290005 Henri and Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop">PRP Records</a>
%H A290005 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%F A290005 a(n) = 3^A219048(n) + 32. - _Elmo R. Oliveira_, Nov 12 2023
%t A290005 Select[Table[3^k+32, {k, 0, 100}], PrimeQ[#] &]
%Y A290005 Cf. A000040, A219048 (corresponding k's).
%K A290005 nonn
%O A290005 1,1
%A A290005 _Robert Price_, Sep 03 2017