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 A061055 #23 Apr 08 2022 15:54:20 %S A061055 1,1,2,4,10,24,70,192,576,1890,6300,21600,78848,294840,1143072,4572288 %N A061055 Duplicate of A060776. %K A061055 dead %O A061055 1,3 %A A061055 _Ed Pegg Jr_, May 28 2001