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 A307549 #13 Jun 10 2025 01:13:29 %S A307549 12,174,3084,35971776,2752830231727104, %T A307549 9068533325994694179911466663936, %U A307549 55357290942669201825421134704769198540735968154850291354435584 %N A307549 Number of longest paths in the n-Apollonian network. %H A307549 Andrew Howroyd, <a href="/A307549/b307549.txt">Table of n, a(n) for n = 1..9</a> %H A307549 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ApollonianNetwork.html">Apollonian Network</a>. %H A307549 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LongestPath.html">Longest Path</a>. %Y A307549 Cf. A292002, A307457 (longest path lengths). %K A307549 nonn %O A307549 1,1 %A A307549 _Eric W. Weisstein_, Apr 14 2019 %E A307549 a(5) onwards from _Andrew Howroyd_, Jun 09 2025