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 A094656 #6 Feb 02 2021 19:48:13 %S A094656 1,1,1,7,55,840,15189,309607,6671842,149850849,3471296793,82442359291, %T A094656 1998559329142,49290785442796,1233639304644946,31268489727956101, %U A094656 801335133177932829,20736286803363051714,541224489038545084067,14234799536039481373552,376974819516101224941091 %N A094656 Number of unlabeled 12-gonal 2-trees with n 12-gons. %H A094656 Andrew Howroyd, <a href="/A094656/b094656.txt">Table of n, a(n) for n = 0..200</a> %H A094656 G. Labelle, C. Lamathe and P. Leroux, <a href="http://arXiv.org/abs/math.CO/0312424">Labeled and unlabeled enumeration of k-gonal 2-trees</a>, arXiv:math/0312424 [math.CO], Dec 23 2003. %Y A094656 Column k=12 of A340811. %Y A094656 Cf. A054581. %K A094656 nonn %O A094656 0,4 %A A094656 _Vladeta Jovovic_, Jun 06 2004 %E A094656 Terms a(19) and beyond from _Andrew Howroyd_, Feb 02 2021