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 A334687 #11 Jun 19 2020 03:57:03 %S A334687 1478,1527,1578,1605,1683,1968 %N A334687 Dates of birth of Kings Felipe (Philip) I, II, ... of Spain. %C A334687 These dates were taken from the Internet, and should be checked. %Y A334687 Cf. A008746. %K A334687 nonn,more %O A334687 1,1 %A A334687 _N. J. A. Sloane_, May 10 2020 %E A334687 a(6) from _Chai Wah Wu_, Jun 18 2020.