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 A308409 #15 Jun 05 2019 04:32:23 %S A308409 1,2,6,22,87,364,1574,6986,31581,144880,672390,3150362,14877317, %T A308409 70726936,338158676 %N A308409 Number of bond trees with n bonds on the square lattice. %C A308409 a(n-1) is the number of bond trees with n sites (vertices) on the square lattice. %C A308409 a(n) is the number of fixed polyedges (A096267) with n edges and no cycles. %H A308409 D. S. Gaunt et al., <a href="https://doi.org/10.1088/0305-4470/15/10/025">Universality in branched polymers on d-dimensional hypercubic lattices</a>, Journal of Physics A: Mathematical and General 15.10 (1982): 3209. %H A308409 Douglas A. Torrance, <a href="https://arxiv.org/abs/1906.01541">Enumeration of planar Tangles</a>, arXiv:1906.01541 [math.CO], 2019. See Table 4.1 (A). %H A308409 S. G. Whittington, G. M. Torrie, and D. S. Gaunt, <a href="https://doi.org/10.1088/0305-4470/16/8/016">Branched polymers with a prescribed number of cycles</a>, Journal of Physics A: Mathematical and General 16.8 (1983): 1695. %K A308409 nonn,more %O A308409 0,2 %A A308409 _Douglas A. Torrance_, May 25 2019