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 A334322 #16 Apr 25 2020 02:25:54 %S A334322 4,12,28,76,204,540,1404,3724,9748,25772,67940,179068,472580,1245620, %T A334322 3286308,8666956,22861604,60301764,159063748,419582396,1106796012, %U A334322 2919664716,7701735292,20317148476,53595401604,141385319932,372973583908,983913216292,2595592842460 %N A334322 Number of endless self-avoiding walks of length n for the square lattice. %C A334322 The article introduces "endless self-avoiding walks (that) are the subset of walks which are still self-avoiding after they have been concatenated with copies of themselves head-to-tail ad infinitum". %H A334322 Nathan Clisby, <a href="https://arxiv.org/abs/1302.2796">Endless self-avoiding walks</a>, arXiv:1302.2796 [cond-mat.stat-mech], 2013. See Table 2 column e_n p. 22. %Y A334322 Cf. A334323, A334324, A334325. %Y A334322 Cf. A334326, A334330, A334331, A334332, A334333, A334334. %K A334322 nonn,nice %O A334322 1,1 %A A334322 _Michel Marcus_, Apr 23 2020