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 A356808 #5 Aug 29 2022 10:22:42 %S A356808 1,4,96,238536576 %N A356808 Number of n-level magic triangles. %H A356808 Gabriel Hale, Bjorn Vogen, and Matthew Wright, <a href="https://arxiv.org/abs/2208.12577">Magic Triangles</a>, arXiv:2208.12577 [math.GM], 2022. %K A356808 nonn,hard,more %O A356808 1,2 %A A356808 _Michel Marcus_, Aug 29 2022