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 A046863 #5 Jun 17 2023 02:45:16 %S A046863 1,1,2,10,74,706,8162,109960 %N A046863 Erroneous version of A000698. %H A046863 J. Touchard, <a href="/A000698/a000698.pdf">Sur un problème de configurations et sur les fractions continues</a>, Canad. J. Math., 4 (1952), 2-25. [Annotated, corrected, scanned copy] %K A046863 dead %O A046863 0,3