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 A102191 #10 Jul 31 2021 14:28:19 %S A102191 4,185,1135955,550783729,10755767351826313,885150880428474601, %T A102191 145045760838001005739,276700469046311728441, %U A102191 17906534239981723909956235510218343,23104799226903739899579090259021365554,504198286800075916303995704410366363448429,2363732899718211729861685511671459865604449872085443 %N A102191 Iccanobirt semiprimes (1 of 15): Semiprime numbers in A102111. %F A102191 a(n) = A102111(A102171(n)). %Y A102191 Cf. A001358, A102111, A102192-A102205. %K A102191 nonn,less,base %O A102191 1,1 %A A102191 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102191 Offset changed to 1 and more terms from _Jinyuan Wang_, Jul 31 2021