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 A102158 #10 Aug 14 2021 07:14:54 %S A102158 2,7,31,31,97885807,7105083736241465849989, %T A102158 386010207538170887319192908532941, %U A102158 797921272502602257281628706183144343679532451 %N A102158 Iccanobirt primes (8 of 15): Prime numbers in A102118. %C A102158 Next term is too large to include. %F A102158 a(n) = A102118(A102138(n)). %Y A102158 Cf. A000040, A102118, A102151-A102165. %K A102158 nonn,base,less %O A102158 1,1 %A A102158 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004 %E A102158 Offset changed to 1 by _Jinyuan Wang_, Aug 14 2021