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 A293952 #13 Oct 31 2017 21:13:21 %S A293952 1,3,99,11259,3052323,1620265923,1488257158851,2172534146099019, %T A293952 4736552519729393091,14708695606607601165843, %U A293952 62671742039942099631403299,355493170380387030721038571419,2618304731622723256262677112102883,24521387779014982719407393681918617443 %N A293952 Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type E_n joins. %H A293952 Lars Blomberg, <a href="/A293952/b293952.txt">Table of n, a(n) for n = 0..100</a> %H A293952 Jeffrey Remmel, S. Zheng, <a href="https://arxiv.org/abs/1611.09018">Rises in forests of binary shrubs</a>, arXiv preprint arXiv:1611.09018 [math.CO], 2016-2017. %Y A293952 Cf. A293950, A293951, A293953. %K A293952 nonn %O A293952 0,2 %A A293952 _N. J. A. Sloane_, Oct 29 2017 %E A293952 Terms a(11) and beyond from _Lars Blomberg_, Oct 31 2017