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 A344516 #5 May 22 2021 04:28:10
%S A344516 3,4,6,10,12,20,150
%N A344516 Numbers k such that (2^k-5, 2^k-3) are twin primes.
%C A344516 No more terms <= A050414(66) = 2086750.
%H A344516 G. L. Honaker, Jr. and Chris K. Caldwell, <a href="https://primes.utm.edu/curios/page.php?short=150">Prime Curios! 150</a>.
%e A344516 3 is a term since (2^3-5, 2^3-3) = (3, 5) are twin primes.
%t A344516 Select[Range[150], And @@ PrimeQ[2^# - {3,5}] &]
%Y A344516 Intersection of A050414 and A059608.
%Y A344516 Cf. A001097.
%K A344516 nonn,more,hard
%O A344516 1,1
%A A344516 _Amiram Eldar_, May 21 2021