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.

A318797 Number of rooted trees with n nodes such that no more than three subtrees of the same size extend from the same node.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 4
5 8
6 18
7 43
8 102
9 250
10 623
11 1579
12 4042
13 10470
14 27350
15 72034
16 190956
17 509259
18 1365271
19 3677522
20 9947145
21 27007988
22 73582758
23 201103314
24 551190098
25 1514683667
26 4172470962
27 11519509386
28 31869341642
29 88337853393
30 245301368188
31 682307613945

List of values

[0, 1, 1, 2, 4, 8, 18, 43, 102, 250, 623, 1579, 4042, 10470, 27350, 72034, 190956, 509259, 1365271, 3677522, 9947145, 27007988, 73582758, 201103314, 551190098, 1514683667, 4172470962, 11519509386, 31869341642, 88337853393, 245301368188, 682307613945]

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

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