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 A037939 #8 Aug 11 2024 14:41:31 %S A037939 44,2,2,11,3,11,67,3,3,3463,13,113,227,173,229,331,11,15748121,541, %T A037939 2062381,11,607,810553,2281,5088913,22815088913 %N A037939 Trajectory of 44 under prime factor concatenation procedure. %H A037939 P. De Geest, <a href="https://www.worldofnumbers.com/topic1.htm">Home Primes</a> %Y A037939 Cf. A037273. %K A037939 fini,full,nonn,tabf,base %O A037939 0,1 %A A037939 _Jeff Burch_ %E A037939 Edited by _Charles R Greathouse IV_, Apr 30 2010