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 A102199 #10 Aug 14 2021 07:03:11 %S A102199 4,26,122309,918349,1892158,46917727,25411507,629951893,444564787601, %T A102199 47147317432111,6249165484647581,68535341599076501,49254291193918837, %U A102199 70468687493735802121,806424054403260562011601,1987232535137485809825804281,7450185554509682737733199157763041 %N A102199 Iccanobirt semiprimes (9 of 15): Semiprime numbers in A102119. %F A102199 a(n) = A102119(A102179(n)). %Y A102199 Cf. A001358, A102119, A102191-A102205. %K A102199 nonn,less,base %O A102199 1,1 %A A102199 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102199 Offset changed to 1 and more terms from _Jinyuan Wang_, Aug 14 2021