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 A241679 #11 Sep 08 2022 08:46:07
%S A241679 11,15,39,135,2055,8199,131079,524295,8388615,536870919,2147483655,
%T A241679 137438953479,2199023255559,8796093022215,140737488355335,
%U A241679 9007199254740999,576460752303423495,2305843009213693959,147573952589676412935,2361183241434822606855
%N A241679 2^p + 7 where p is prime.
%H A241679 Vincenzo Librandi, <a href="/A241679/b241679.txt">Table of n, a(n) for n = 1..200</a>
%t A241679 Table[2^Prime[n] + 7, {n, 40}]
%o A241679 (Magma) [2^p+7: p in PrimesUpTo(100)];
%Y A241679 Cf. similar sequence listed in A241573.
%K A241679 nonn
%O A241679 1,1
%A A241679 _Vincenzo Librandi_, Apr 29 2014