cp's OEIS Frontend

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.

A293950 Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type A_n joins.

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%I A293950 #14 Oct 31 2017 21:16:10
%S A293950 1,2,40,3194,666160,287316122,222237912664,280180369563194,
%T A293950 537546603651987424,1490424231594917313242,5735930050702709579598280,
%U A293950 29665120602262869704075225594,200776204583497637546703088929040,1739317344037357729592558320480494362
%N A293950 Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type A_n joins.
%H A293950 Lars Blomberg, <a href="/A293950/b293950.txt">Table of n, a(n) for n = 0..100</a>
%H A293950 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 A293950 Cf. A293951, A293952, A293953.
%K A293950 nonn
%O A293950 0,2
%A A293950 _N. J. A. Sloane_, Oct 29 2017
%E A293950 Terms a(11) and beyond from _Lars Blomberg_, Oct 31 2017