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 A100457 #8 Jan 31 2023 12:30:22 %S A100457 5,9,49,65,69,145,151,329,1065,2671,9409 %N A100457 Values of n for which the decimal number 10...060...01 is an n-digit prime. %C A100457 a(12) > 54299. - _Robert Price_, Apr 14 2013 %Y A100457 Cf. A100028. %K A100457 nonn,base,more %O A100457 1,1 %A A100457 Harvey Dubner (harvey(AT)dubner.com), Nov 23 2004 %E A100457 a(11) from _Robert Price_, Apr 14 2013