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 A376910 #12 Oct 14 2024 11:06:28 %S A376910 2,11,47,50,66,122,302,4016,14358,17424,21902,52961 %N A376910 Numbers k such that 85*10^k+1 is prime. %C A376910 If it exists, a(13)>100000. %Y A376910 Cf. A376850. %K A376910 nonn,hard,more %O A376910 1,1 %A A376910 _Hugo Pfoertner_, Oct 10 2024 %E A376910 a(12) from _Michael S. Branicky_, Oct 11 2024