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 A036393 #10 Mar 04 2021 11:23:46 %S A036393 8,32,108,348,1068,3180,9216 %N A036393 Duplicate of A003201. %K A036393 dead %O A036393 1,1