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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.

A214205 Number of rooted planar binary unlabeled trees with n leaves and caterpillar index = 5.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 8
6 0
7 16
8 64
9 240
10 832
11 2976
12 11008
13 40624
14 150400
15 559584
16 2090112
17 7832928
18 29432704
19 110863680
20 418479104
21 1582628656
22 5995379456
23 22746329952
24 86417102720
25 328720669216
26 1251831214976
27 4772155518656
28 18209463672320
29 69544295350240
30 265814912973056
31 1016776398337728
32 3892040452165888
33 14907843267549376

List of values

[0, 0, 0, 0, 0, 8, 0, 16, 64, 240, 832, 2976, 11008, 40624, 150400, 559584, 2090112, 7832928, 29432704, 110863680, 418479104, 1582628656, 5995379456, 22746329952, 86417102720, 328720669216, 1251831214976, 4772155518656, 18209463672320, 69544295350240, 265814912973056, 1016776398337728, 3892040452165888, 14907843267549376]

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

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