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 A102198 #10 Aug 14 2021 07:15:14 %S A102198 4,26,86,8149,63071,16297,649051,58252941851,92725334137, %T A102198 1053497381056741,1278670308661982,94977834729989377, %U A102198 670970457022641744643,875040780930863483219,717513198454659455769232618,5543447679090248342657818634097933227550696536461 %N A102198 Iccanobirt semiprimes (8 of 15): Semiprime numbers in A102118. %F A102198 a(n) = A102118(A102178(n)). %Y A102198 Cf. A001358, A102118, A102191-A102205. %K A102198 nonn,less,base %O A102198 1,1 %A A102198 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102198 Offset changed to 1 and more terms from _Jinyuan Wang_, Aug 14 2021