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.

A330470 Number of non-isomorphic series/singleton-reduced rooted trees on a multiset of size n.

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 39
5 236
6 1836
7 16123
8 162008
9 1802945
10 22012335
11 291290460
12 4144907830
13 62986968311
14 1016584428612
15 17344929138791
16 311618472138440
17 5875109147135658
18 115894178676866576
19 2385755803919949337
20 51133201045333895149
21 1138659323863266945177
22 26296042933904490636133

List of values

[1, 1, 2, 7, 39, 236, 1836, 16123, 162008, 1802945, 22012335, 291290460, 4144907830, 62986968311, 1016584428612, 17344929138791, 311618472138440, 5875109147135658, 115894178676866576, 2385755803919949337, 51133201045333895149, 1138659323863266945177, 26296042933904490636133]

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

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