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 A079841 #20 Aug 08 2019 06:40:55 %S A079841 0,11,3,211,2111,0,112111,1111211,0,11131111,1121111111,0, %T A079841 111211111111,2111111111111,0,31111111111111,212111111111111,0, %U A079841 1111111111111111111,2111111111111111111,0,111111111111111121111,11111111111111111111111,0,211111111111111111111111 %N A079841 Duplicate of A069869. %C A079841 Name was: Largest prime that is a concatenation of partitions of n; or 0 if no such number exists. %K A079841 dead %O A079841 1,2 %A A079841 _Amarnath Murthy_, Feb 16 2003