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 A037924 #8 Aug 11 2024 14:41:31 %S A037924 15,3,5,5,7,3,19,11,29,1129 %N A037924 Trajectory of 15 under prime factor concatenation procedure. %H A037924 P. De Geest, <a href="https://www.worldofnumbers.com/topic1.htm">Home Primes</a> %Y A037924 Cf. A037273. %K A037924 fini,full,nonn,tabf,base %O A037924 0,1 %A A037924 _Jeff Burch_ %E A037924 Edited by _Charles R Greathouse IV_, Apr 30 2010