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 A048554 #6 Oct 15 2019 00:11:23 %S A048554 13,131,1319,131909,13190909,1319090933,131909093341,13190909334101, %T A048554 1319090933410141,131909093341014131,13190909334101413129, %U A048554 131909093341014131297,13190909334101413129739 %N A048554 p(n+1) is next smallest prime beginning with p(n), initial prime is 13. %Y A048554 Cf. A048549-A048556. %K A048554 nonn,base %O A048554 0,1 %A A048554 _Patrick De Geest_, May 15 1999