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 A351967 #15 Feb 27 2022 07:02:57 %S A351967 1,8,20,38,58,73,90,108,122,141,154,176,186,209,218,244,250,277,282, %T A351967 312,314,345,346,380,378,413,410,448,442,481,474,516,506,549,538,584, %U A351967 570,617,602,652,634,685,666,720,698,753,730,788,762,821,794,856,826,889 %N A351967 Coordination sequence for the XXOXX tiling with respect to a tile of type B. %C A351967 See the main entry A350963 for details about this tiling. %H A351967 Vytautas Gruslys, Imre Leader, and Ta Sheng Tan, <a href="http://arxiv.org/abs/1505.03697">Tiling with arbitrary tiles</a>, arXiv:1505.03697 [math.CO], 2015-2016. A small piece of this tiling is shown in Fig. 2. %H A351967 Rémy Sigrist, <a href="/A351967/a351967.png">Illustration of initial terms</a> %H A351967 Rémy Sigrist, <a href="/A351967/a351967_1.png">Illustration of the configuration for n = 0..100 with cyclic colors</a> %H A351967 Rémy Sigrist, <a href="/A351967/a351967.gp.txt">PARI program</a> %H A351967 N. J. A. Sloane, <a href="https://oeis.org/A350963/a350963_1.pdf">A large portion of the tiling in higher resolution</a> %H A351967 <a href="/index/Con#coordination_sequences">Index entries for coordination sequences</a> %F A351967 Conjectured g.f.: -(2*t^9+6*t^8-5*t^7-13*t^6-27*t^5-37*t^4-30*t^3-19*t^2-8*t-1)/((1-t^2)*(1-t^4)). - _N. J. A. Sloane_, Feb 26 2022 %o A351967 (PARI) See Links section. %Y A351967 Cf. A350963 (type R), A351966 (type G). %K A351967 nonn %O A351967 0,2 %A A351967 _Rémy Sigrist_, Feb 26 2022