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 A308130 #6 Feb 16 2025 08:33:55 %S A308130 0,1,12,6912,23710679040 %N A308130 Number of (undirected) Hamiltonian paths in the n-halved cube graph. %H A308130 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HalvedCubeGraph.html">Halved Cube Graph</a> %H A308130 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HamiltonianPath.html">Hamiltonian Path</a> %F A308130 a(n) = A137888(n)/2. %Y A308130 Cf. A137888. %K A308130 nonn,more,hard %O A308130 1,3 %A A308130 _Eric W. Weisstein_, May 14 2019