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.

A214204 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 16
7 48
8 160
9 560
10 1952
11 7008
12 25536
13 94000
14 348640
15 1301664
16 4884928
17 18410208
18 69632320
19 264176320
20 1004907904
21 3831461936
22 14638340960
23 56028848160
24 214804352960
25 824741125536
26 3170860158656
27 12205939334976
28 47038828816512
29 181465889281760
30 700734291793600
31 2708333654394432
32 10476476693939584
33 40557325959684032

List of values

[0, 0, 0, 0, 0, 8, 16, 48, 160, 560, 1952, 7008, 25536, 94000, 348640, 1301664, 4884928, 18410208, 69632320, 264176320, 1004907904, 3831461936, 14638340960, 56028848160, 214804352960, 824741125536, 3170860158656, 12205939334976, 47038828816512, 181465889281760, 700734291793600, 2708333654394432, 10476476693939584, 40557325959684032]

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

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