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 A104067 #13 Sep 08 2022 08:45:17
%S A104067 17,29,269,1048589,274877906957,18446744073709551629,
%T A104067 1208925819614629174706189,
%U A104067 7957171782556586274486115970349133441607298412757563479047423630290551952200534008528909
%N A104067 Primes of the form 2^k + 13.
%F A104067 a(n) = 2^A102634(n) + 13. - _R. J. Mathar_, Feb 22 2009
%t A104067 a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 13] == True, 2^n + 13, 0], {n, 1, 400}]]], 1]
%o A104067 (Magma) [ a: n in [0..350] | IsPrime(a) where a is 2^n+13 ] // _Vincenzo Librandi_, Nov 16 2010
%K A104067 nonn
%O A104067 1,1
%A A104067 _Roger L. Bagula_, Mar 02 2005
%E A104067 Definition corrected by Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 19 2009