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.

A220816 Number of rooted binary MUL-trees with n leaves on the label set [3].

Table of values

n a(n)
1 3
2 6
3 18
4 75
5 333
6 1620
7 8208
8 43188
9 232947
10 1282824
11 7178598
12 40711158
13 233445483
14 1351255608
15 7884677052
16 46330220604
17 273905815095
18 1628113352418
19 9724235975136
20 58330497033576
21 351252593186211
22 2122598374680816
23 12867757823745036
24 78235685862460893

List of values

[3, 6, 18, 75, 333, 1620, 8208, 43188, 232947, 1282824, 7178598, 40711158, 233445483, 1351255608, 7884677052, 46330220604, 273905815095, 1628113352418, 9724235975136, 58330497033576, 351252593186211, 2122598374680816, 12867757823745036, 78235685862460893]

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

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