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 A293953 #14 Oct 31 2017 21:28:14 %S A293953 1,5,169,19241,5216485,2769073949,2543467934449,3712914075133121, %T A293953 8094884285992309261,25137521105896509819605, %U A293953 107107542395866078895709049,607546536582495444795794603801,4474746926116218974619451907008885,41907652406924609850893820950967654989 %N A293953 Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type S_n joins. %H A293953 Lars Blomberg, <a href="/A293953/b293953.txt">Table of n, a(n) for n = 0..100</a> %H A293953 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 A293953 Cf. A293950, A293951, A293952. %K A293953 nonn %O A293953 0,2 %A A293953 _N. J. A. Sloane_, Oct 29 2017 %E A293953 Terms a(11) and beyond from _Lars Blomberg_, Oct 31 2017