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 A383914 #11 May 21 2025 01:39:16 %S A383914 3,199,3187,44683,59971,213319,303091,916771 %N A383914 Primes p such that 12*2^p + 1 is also prime. %C A383914 If k is a term in A002253 and k-2 is prime, then k-2 is a term. - _Amiram Eldar_, May 17 2025 %e A383914 3 is a term because 12*2^3+1 = 97 (prime). %t A383914 Select[Prime[Range[3500]],PrimeQ[12 2^#+1]&] %o A383914 (Magma) [p: p in PrimesUpTo (3500) | IsPrime(12*2^p+1)]; %Y A383914 Cf. A002253, A175172, A322301, A322302. %K A383914 nonn,more %O A383914 1,1 %A A383914 _Vincenzo Librandi_, May 17 2025 %E A383914 a(4)-a(8) from the b-file at A002253 added by _Amiram Eldar_, May 17 2025