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 A322749 #7 Sep 04 2023 17:36:28 %S A322749 3,5,7,31,37,41,61,103,137,2053,125887,968467 %N A322749 Primes in A032420. %C A322749 Equivalently, primes p such that 141*2^p+1 is prime. %p A322749 select(p->isprime(p) and isprime(141*2^p+1),[$1..400]); %t A322749 Select[Prime[Range[140]],PrimeQ[141*2^#+1]&] (* _Harvey P. Dale_, Sep 04 2023 *) %o A322749 (GAP) Filtered([1..400],p->IsPrime(p) and IsPrime(141*2^p+1)); %Y A322749 Subsequence of A032420. %K A322749 nonn,more %O A322749 1,1 %A A322749 _Muniru A Asiru_, Dec 25 2018