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 A144234 #11 Jul 24 2025 03:26:02
%S A144234 11,31,41,211,1291,1301,279941,60466181,78364164101,101559956668421,
%T A144234 36845653286788892983291,1326443518324400147398651,
%U A144234 7958661109946400884391941,286511799958070431838109691,174588755932389037098918153698611839369211,6285195213566005335561053533150026217291781
%N A144234 Prime numbers of the form 6^k +- 5.
%H A144234 Amiram Eldar, <a href="/A144234/b144234.txt">Table of n, a(n) for n = 1..32</a>
%t A144234 Select[Sort[Flatten[#+{5,-5}&/@(6^Range[50])]],PrimeQ] (* _Harvey P. Dale_, May 12 2015 *)
%Y A144234 Cf. A000040, A000668, A144231, A144232, A144233.
%K A144234 nonn
%O A144234 1,1
%A A144234 _Reikku Kulon_, Sep 15 2008
%E A144234 a(15)-a(16) from _Amiram Eldar_, Jul 23 2025