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 A322301 #10 Sep 08 2022 08:46:23 %S A322301 3,7,13,127,3313,23473,819739 %N A322301 Primes p such that 5*2^p + 1 is also prime. %C A322301 Primes in A002254. %p A322301 select(p->isprime(p) and isprime(5*2^p+1),[$0..5000]); # _Muniru A Asiru_, Dec 19 2018 %t A322301 Select[Prime[Range[4000]], PrimeQ[5 2^# + 1] &] %o A322301 (Magma) [p: p in PrimesUpTo (10000) | IsPrime(5*2^p+1)]; %Y A322301 Cf. A002254, A175172. %K A322301 nonn,more %O A322301 1,1 %A A322301 _Vincenzo Librandi_, Dec 19 2018