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 A246212 #10 Aug 14 2017 19:14:06 %S A246212 1,9,93,1155,17025,292383,5752131,127790505,3167896005,86756071545, %T A246212 2602658092419,84917405260779,2994675198208785,113538315994418175 %N A246212 Duplicate of A163951. %K A246212 dead %O A246212 2,2