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 A144538 #3 Apr 08 2024 09:42:09 %S A144538 3,6,16,26,84,126,424,610987,1597 %N A144538 Erroneous version of A127935. %K A144538 dead %O A144538 1,1