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 A144236 #11 Jul 24 2025 03:26:05
%S A144236 13,43,337,349,117643,40353601,33232930569607,558545864083284001,
%T A144236 1341068619663964900801,7730993719707444524137094401,
%U A144236 2651730845859653471779023381607,256923577521058878088611477224235621321601,4318114567396436564035293097707728087552248843
%N A144236 Prime numbers of the form 7^k +- 6.
%H A144236 Amiram Eldar, <a href="/A144236/b144236.txt">Table of n, a(n) for n = 1..20</a>
%t A144236 Select[Flatten[Table[7^k+{6,-6},{k,40}]],PrimeQ]//Sort (* _Harvey P. Dale_, Jul 07 2021 *)
%Y A144236 Cf. A000040, A000668, A144231, A144232, A144233, A144234.
%K A144236 nonn
%O A144236 1,1
%A A144236 _Reikku Kulon_, Sep 15 2008
%E A144236 a(12)-a(13) from _Amiram Eldar_, Jul 23 2025