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.

A298533 Number of unlabeled rooted trees with n vertices such that every branch of the root has the same number of leaves.

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 8
6 15
7 31
8 64
9 144
10 333
11 808
12 2004
13 5109
14 13199
15 34601
16 91539
17 244307
18 656346
19 1774212
20 4820356
21 13157591
22 36060811
23 99198470
24 273790194
25 757971757
26 2104222594
27 5856496542
28 16338140048
29 45678276507
30 127964625782
31 359155302204
32 1009790944307

List of values

[1, 1, 2, 4, 8, 15, 31, 64, 144, 333, 808, 2004, 5109, 13199, 34601, 91539, 244307, 656346, 1774212, 4820356, 13157591, 36060811, 99198470, 273790194, 757971757, 2104222594, 5856496542, 16338140048, 45678276507, 127964625782, 359155302204, 1009790944307]

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

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