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 A358219 #5 Nov 04 2022 19:26:12 %S A358219 15,35,45,70,75,77,105,135,140,143,154,165,175,195,221,225,231,245, %T A358219 255,280,285,286,308,315,323,345,350,375,385,405,429,435,437,442,450, %U A358219 455,462,465,490,495,525,539,555,560,572,585,595,615,616,645,646,663,665,667,675,693,700,705,715,735,765,770,795,805 %N A358219 Indices k where A358217(k) != A358218(k). %H A358219 <a href="/index/Pri#primorial_numbers">Index entries for sequences related to primorial numbers</a> %Y A358219 Cf. A319627, A328478, A358217, A358218. %K A358219 nonn %O A358219 1,1 %A A358219 _Antti Karttunen_, Nov 04 2022