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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.

A316796 Number of unlabeled rooted trees with n nodes where the multiplicities in the multiset of branches under any given node are distinct.

Table of values

n a(n)
1 1
2 1
3 2
4 3
5 6
6 11
7 21
8 40
9 75
10 139
11 263
12 498
13 932
14 1761
15 3322
16 6244
17 11775
18 22204
19 41810
20 78795
21 148458
22 279690
23 527006
24 993033
25 1870881
26 3525109
27 6641904
28 12514243
29 23578708
30 44426222
31 83705148
32 157713617
33 297156310
34 559886943
35 1054911312
36 1987613556

List of values

[1, 1, 2, 3, 6, 11, 21, 40, 75, 139, 263, 498, 932, 1761, 3322, 6244, 11775, 22204, 41810, 78795, 148458, 279690, 527006, 993033, 1870881, 3525109, 6641904, 12514243, 23578708, 44426222, 83705148, 157713617, 297156310, 559886943, 1054911312, 1987613556]

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

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