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 A103907 #15 Nov 25 2020 03:12:51 %S A103907 4,58,-128,288,-374,980,-1614,2688,-3840,4246 %N A103907 Coordination sequence for Penrose tiling is a(n) + tau*A103906(n), where tau is A001622. %H A103907 M. Baake, U. Grimm, P. Repetowicz and D. Joseph, <a href="https://arXiv.org/abs/cond-mat/9809110">Coordination sequences and critical points</a>, arXiv:cond-mat/9809110 [cond-mat.stat-mech], 1998; in: S. Takeuchi and T. Fujiwara, Proceedings of the 6th International Conference on Quasicrystals - Yamada Conference XLVII, World Scientific Publishing, 1998, ISBN 981-02-3343-4, pp 124-127. %H A103907 <a href="/index/Con#coordination_sequences">Index entries for coordination sequences of aperiodic tilings</a> %Y A103907 Cf. A001622 (golden ratio), A103906. %K A103907 sign,more %O A103907 1,1 %A A103907 _Ralf Stephan_, Feb 22 2005