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 A302842 #14 May 09 2018 13:45:52 %S A302842 1,5,5,10,30,20,30,35,25,55,40,65,50,50,70,80,80,90,80,70,110,105,105, %T A302842 80,130,120,140,130,140,100,165,145,170,165,115,180,180,200,180,140, %U A302842 200,215,210,225,210,160,240,240,240,250,165,275,250,285,255,200,280 %N A302842 Coordination sequence for a node with 5-fold symmetry in a Penrose rhomb tiling beginning with a central 'Sun' configuration. %C A302842 See A302176 and A302841 for similar sequences. %H A302842 Rémy Sigrist, <a href="/A302842/b302842.txt">Table of n, a(n) for n = 0..1597</a> %H A302842 Preshing on Programming, <a href="https://preshing.com/20110831/penrose-tiling-explained/">Penrose Tiling Explained</a> %H A302842 Rémy Sigrist, <a href="/A302842/a302842.png">Illustration of first terms</a> %H A302842 Rémy Sigrist, <a href="/A302842/a302842.txt">C++ program for A302842</a> %H A302842 Wikipedia, <a href="http://en.wikipedia.org/wiki/Penrose_tiling">Penrose tiling</a> %H A302842 <a href="/index/Con#coordination_sequences">Index entries for coordination sequences of aperiodic tilings</a> %o A302842 (C++) See Links section. %Y A302842 Cf. A302176, A302841, A302869 (partial sums). %K A302842 nonn %O A302842 0,2 %A A302842 _Rémy Sigrist_, Apr 14 2018