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 A104115 #8 Sep 08 2022 08:45:17
%S A104115 13,43,223,1303,46663,21936950640377863,4738381338321616903,
%T A104115 1023490369077469249543,221073919720733357899783,
%U A104115 1047532535594334222593508922191671036215303
%N A104115 Primes of the form 6^n+7.
%H A104115 Vincenzo Librandi, <a href="/A104115/b104115.txt">Table of n, a(n) for n = 1..16</a>
%t A104115 Select[Table[6^n+7,{n,0,300}],PrimeQ] (* _Vincenzo Librandi_, Jul 19 2012 *)
%o A104115 (Magma) [ a: n in [0..250] | IsPrime(a) where a is 6^n+7]; // _Vincenzo Librandi_, Jul 19 2012
%Y A104115 Cf. A080174.
%K A104115 nonn
%O A104115 1,1
%A A104115 _Roger L. Bagula_, Mar 05 2005