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 A365814 #10 Sep 27 2023 14:00:11 %S A365814 2,4,8,1,1,9,4,3,0,4,0,9,2,0,1,5,6,2,2,6,3,3,5,3,7,2,4,1,2,1,6,8,5,7, %T A365814 1,8,0,5,5,2,7,4,5,2,1,6,9,9,8,4,7,6,7,2,8,3,9,5,8,9,3,1,4,0,8,1,3,8, %U A365814 3,6,9,2,2,3,8,6,7,6,5,0,5,3,0,1,3,2,9,1 %N A365814 Decimal expansion of the largest root of the polynomial x^3 - 2*x^2 - 2*x + 2. %C A365814 It is the spectral radius of the house graph. %H A365814 Alberto Seeger and David Sossa, <a href="https://ajc.maths.uq.edu.au/pdf/87/ajc_v87_p258.pdf">Infinite families of connected graphs with equal spectral radius</a>, Australas. J. Combin. 87 (2) (2023), 258-276. See p. 270. %H A365814 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HouseGraph.html">House Graph</a> %F A365814 Equals (2 + 10/(3*i*sqrt(111) - 1)^(1/3) + (3*i*sqrt(111) - 1)^(1/3))/3, where i denotes the imaginary unit. %e A365814 2.4811943040920156226335372412168571805527452... %p A365814 Digits:= 140: %p A365814 fsolve(x^3-2*x^2-2*x+2)[3]; # _Alois P. Heinz_, Sep 19 2023 %t A365814 First[RealDigits[Root[#^3-2#^2-2#+2,3,0],10,88]] %Y A365814 Cf. A078564, A209927, A222132, A365750. %K A365814 nonn,cons %O A365814 1,1 %A A365814 _Stefano Spezia_, Sep 19 2023