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 A085019 #10 Dec 12 2021 09:29:42 %S A085019 393,109,132,157,481,184,213,1048,244,577,277,1833,312,681 %N A085019 a(n) = A083752(A085018(n)). %Y A085019 Cf. A083752, A085018. %K A085019 nonn,more %O A085019 1,1 %A A085019 _Zak Seidov_, Jun 18 2003 %E A085019 Edited and extended by _Stefan Steinerberger_, Jul 30 2007