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 A337796 #16 Feb 16 2025 08:34:00 %S A337796 1,16,5728,758857152 %N A337796 Number of graceful labelings of the n X n grid graph. %H A337796 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GracefulLabeling.html">Graceful Labeling</a> %H A337796 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GridGraph.html">Grid Graph</a> %Y A337796 Cf. A336833. %K A337796 nonn,more,bref %O A337796 1,2 %A A337796 _Eric W. Weisstein_, Sep 22 2020 %E A337796 a(4) from _Bert Dobbelaere_, Sep 28 2020