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 A378867 #16 Dec 22 2024 12:31:50 %S A378867 3,27,179,507,4671,4923,5871,7571,19551,19955 %N A378867 Numbers k such that 5^k + 86 is prime. %C A378867 a(11) > 10^5. - _Michael S. Branicky_, Dec 22 2024 %e A378867 3 is a term because 5^3 + 86 = 211 is prime. %t A378867 Select[Range[0,5000],PrimeQ[5^#+86]&] %o A378867 (Magma) [k: k in [0..1000] |IsPrime (5^k+86)]; %Y A378867 Cf. A089142, A124621, A217133. %K A378867 nonn,more %O A378867 1,1 %A A378867 _Robert Price_, Dec 09 2024 %E A378867 a(5)-a(10) from _Vincenzo Librandi_, Dec 17 2024