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 A333077 #20 Feb 16 2025 08:33:59 %S A333077 1,2,3,8,64,2626,4850838 %N A333077 Number of maximal independent sets in the binary de Bruijn graph of order n. %H A333077 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/deBruijnGraph.html">de Bruijn Graph</a> %H A333077 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MaximalIndependentVertexSet.html">Maximal Independent Vertex Set</a> %H A333077 Wikipedia, <a href="https://en.wikipedia.org/wiki/De_Bruijn_graph">De Bruijn graph</a> %H A333077 Wikipedia, <a href="https://en.wikipedia.org/wiki/Maximal_independent_set">Maximal independent set</a> %o A333077 (Python) %o A333077 import networkx as nx %o A333077 def deBruijn(n): %o A333077 return nx.MultiDiGraph(((0, 0), (0, 0))) if n==0 else nx.line_graph(deBruijn(n-1)) %o A333077 def A333077(n): %o A333077 return sum(1 for _ in nx.find_cliques(nx.complement(nx.Graph(deBruijn(n))))) %o A333077 # replacement of a function removed from NetworkX by _Ross Barnowski_, Nov 12 2023 %Y A333077 Cf. A006946, A333078. %K A333077 nonn,hard,more %O A333077 0,2 %A A333077 _Pontus von Brömssen_, Mar 07 2020