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 A102159 #10 Aug 14 2021 07:13:19 %S A102159 2,7,31,401,90481,6691411 %N A102159 Iccanobirt primes (9 of 15): Prime numbers in A102119. %C A102159 Next term is too large to include. %F A102159 a(n) = A102119(A102139(n)). %Y A102159 Cf. A000040, A102119, A102151-A102165. %K A102159 nonn,base,less %O A102159 1,1 %A A102159 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102159 Offset changed to 1 by _Jinyuan Wang_, Aug 14 2021