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 A361186 #18 Feb 16 2025 08:34:05 %S A361186 0,0,0,6,252,14904,9021648,1059526463616 %N A361186 Number of chordless cycles in the halved cube graph Q_n/2. %C A361186 Using the convention that chordless cycles have length >= 4. %H A361186 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChordlessCycle.html">Chordless Cycle</a> %H A361186 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HalvedCubeGraph.html">Halved Cube Graph</a> %Y A361186 Cf. A358356, A361149, A361187. %K A361186 nonn,more %O A361186 1,4 %A A361186 _Eric W. Weisstein_, Mar 03 2023 %E A361186 a(7) = 9021648 from _Eric W. Weisstein_, Apr 16 2023 %E A361186 a(8) from _Pontus von Brömssen_, Apr 16 2023