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 A299797 #5 Feb 19 2018 14:31:24 %S A299797 17,41,83,209,479,1169,2787,6745 %N A299797 Ground state degeneracy of a periodic chain for angle Pi < theta < 3*Pi/2. %H A299797 Yun-Tak Oh, Hosho Katsura, Hyun-Yong Lee, Jung Hoon Han, <a href="https://arxiv.org/abs/1709.01344">Proposal of a spin-one chain model with competing dimer and trimer interactions</a>, arXiv:1709.01344 [cond-mat.str-el], 2017. %Y A299797 Cf. A005248, A299798. %K A299797 nonn,more %O A299797 3,1 %A A299797 _Michael De Vlieger_, Feb 19 2018