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 A378868 #20 Dec 24 2024 22:13:08 %S A378868 2,3,31,79,491,3019,3623,4175,9957,21963,71637,80551,80831 %N A378868 Numbers k such that 5^k - 22 is prime. %C A378868 a(14) > 10^5. - _Michael S. Branicky_, Dec 24 2024 %e A378868 3 is a term because 5^3 - 22 = 103 is prime. %t A378868 Select[Range[0,5000],PrimeQ[5^#-22]&] %o A378868 (Magma) [k: k in [0..1000] |IsPrime (5^k-22)]; %Y A378868 Cf. A059613, A109080, A165701, A217134. %K A378868 nonn,more %O A378868 1,1 %A A378868 _Robert Price_, Dec 09 2024 %E A378868 a(8)-a(10) from _Michael S. Branicky_, Dec 17 2024 %E A378868 a(11)-a(13) from _Michael S. Branicky_, Dec 22 2024