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 A102176 #11 Aug 12 2021 03:27:22 %S A102176 5,9,15,22,38,44,67,84,148,154,162,186,189,227,228,275,280,285,298,349 %N A102176 Iccanobirt semiprime indices (6 of 15): Indices of semiprime numbers in A102116. %F A102176 A102116(a(n)) = A102196(n). %Y A102176 Cf. A001358, A102116, A102171-A102185, A102196. %K A102176 nonn,more,less,base %O A102176 1,1 %A A102176 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102176 Offset changed to 1 and a(14)-a(20) from _Jinyuan Wang_, Aug 12 2021