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 A094628 #16 Apr 14 2021 22:36:34 %S A094628 4,13,40,130,400,1300,4000,13000,40000,130000,400000,1300000,4000000, %T A094628 13000000,40000000,130000000,400000000,1300000000,4000000000, %U A094628 13000000000,40000000000,130000000000,400000000000,1300000000000 %N A094628 Erroneous version of A052218. %K A094628 dead %O A094628 1,1