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 A082535 #10 Dec 18 2017 22:39:17 %S A082535 0,0,0,0,0,0,1,3,8,19,40,83,176,365,775,1643,3483 %N A082535 Duplicate of A007326. %K A082535 dead %O A082535 0,8