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 A174267 #23 Aug 18 2024 20:10:49 %S A174267 5,7,47 %N A174267 Primes p such that 5^p - 4 is also prime. %C A174267 If it exists, a(4) > 48091. - _J.W.L. (Jan) Eerland_, Nov 13 2022 %C A174267 If it exists, a(4) > 2*10^5 (cf. comment by _Tyler NeSmith_ in A059613). - _Michael S. Branicky_, Aug 17 2024 %F A174267 A000040 INTERSECT A059613. - _R. J. Mathar_, Apr 15 2010 %e A174267 For p=5, 5^5-4=3121; p=7, 5^7-4=78121; p=47, 5^47-4= 710542735760100185871124267578121 %o A174267 (Magma) [p: p in PrimesUpTo(3500) | IsPrime(5^p-4)]; %o A174267 (PARI) is(n)=isprime(n) && isprime(5^n-4) \\ _Charles R Greathouse IV_, Sep 06 2016 %Y A174267 Cf. A000040, A059613. %K A174267 nonn,more,bref %O A174267 1,1 %A A174267 _Vincenzo Librandi_, Mar 14 2010