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 A102197 #10 Aug 12 2021 04:51:11 %S A102197 4,62,1350266,7217219419,662282997049,131048548574311, %T A102197 1476501837943501,77398992743877949,1009160086034826303, %U A102197 7334718374224277375323,267139368935075847112946291,149235809291913788071835702010683,1385662433217897970940689446154295119 %N A102197 Iccanobirt semiprimes (7 of 15): Semiprime numbers in A102117. %F A102197 a(n) = A102117(A102177(n)). %Y A102197 Cf. A001358, A102117, A102191-A102205. %K A102197 nonn,less,base %O A102197 1,1 %A A102197 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102197 Offset changed to 1 and a(13) from _Jinyuan Wang_, Aug 12 2021