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 A037926 #8 Aug 11 2024 14:41:31 %S A037926 20,2,2,5,3,3,5,5,5,11,61,11,4651,3,3,12739,17,194867,19,41,22073,709, %T A037926 273797,3,97,137,17791,11,3610337981,7,3391,4786213,3,3,3,3,7,23,31, %U A037926 1815403,13,17,23,655857429041,3,31,8308475676071413 %N A037926 Trajectory of 20 under prime factor concatenation procedure. %H A037926 P. De Geest, <a href="https://www.worldofnumbers.com/topic1.htm">Home Primes</a> %Y A037926 Cf. A037273. %K A037926 fini,full,nonn,tabf,base %O A037926 0,1 %A A037926 _Jeff Burch_ %E A037926 Edited by _Charles R Greathouse IV_, Apr 30 2010