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 A056261 #18 Apr 18 2022 17:48:41 %S A056261 2,28,252,1840,11924,71476,405204,2202724,11590162,59417180,298186524, %T A056261 1470151308,7140410208,34237750548,162350915772,762391407024, %U A056261 3549556185044,16400558514664,75263022053196 %N A056261 Series for radius of gyration for lattice animals on square lattice. %H A056261 I. Jensen, <a href="/A056261/b056261.txt">Table of n, a(n) for n = 2..42</a> (from link below) %H A056261 I. Jensen, <a href="https://doi.org/10.1023/A:1004855020556">Enumerations of lattice animals and trees</a>, J. Stat. Phys. 103 (3-4) (2001) 865-881, Table II. %H A056261 I. Jensen, <a href="http://arxiv.org/abs/cond-mat/0007239">Enumerations of lattice animals and trees</a>, arXiv:cond-mat/0007239. %H A056261 I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/animals/series/square.site.ser">Terms a(2)..a(42)</a> %H A056261 I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/">Home page</a> %Y A056261 Cf. A001168. %K A056261 nonn %O A056261 2,1 %A A056261 _N. J. A. Sloane_, Aug 27 2000