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 A334554 #5 Feb 16 2025 08:34:00 %S A334554 1,2,38,6936,14747896,394274110160,138804098924751280 %N A334554 Number of Eulerian orientations in the n-cocktail party graph. %C A334554 An Eulerian orientation of a graph is an orientation of the edges such that every vertex has in-degree equal to out-degree. %C A334554 The corresponding sequence for the complete graph on 2n+1 vertices is A007079. %H A334554 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CocktailPartyGraph.html">Cocktail Party Graph</a> %Y A334554 Cf. A007079, A297383. %K A334554 nonn,more %O A334554 1,2 %A A334554 _Andrew Howroyd_, May 22 2020