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.

A293953 Number of linear extensions of a poset whose Hasse diagram consists of n binary shrubs with type S_n joins.

Table of values

n a(n)
0 1
1 5
2 169
3 19241
4 5216485
5 2769073949
6 2543467934449
7 3712914075133121
8 8094884285992309261
9 25137521105896509819605
10 107107542395866078895709049
11 607546536582495444795794603801
12 4474746926116218974619451907008885
13 41907652406924609850893820950967654989

List of values

[1, 5, 169, 19241, 5216485, 2769073949, 2543467934449, 3712914075133121, 8094884285992309261, 25137521105896509819605, 107107542395866078895709049, 607546536582495444795794603801, 4474746926116218974619451907008885, 41907652406924609850893820950967654989]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.