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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.

A330465 Number of non-isomorphic series-reduced rooted trees whose leaves are multisets with a total of n elements.

Table of values

n a(n)
1 1
2 4
3 14
4 87
5 608
6 5573
7 57876
8 687938
9 9058892
10 130851823
11 2048654450
12 34488422057
13 620046639452
14 11839393796270
15 238984150459124
16 5079583100918338
17 113299159314626360
18 2644085918303683758
19 64393240540265515110
20 1632731130253043991252
21 43013015553755764179000

List of values

[1, 4, 14, 87, 608, 5573, 57876, 687938, 9058892, 130851823, 2048654450, 34488422057, 620046639452, 11839393796270, 238984150459124, 5079583100918338, 113299159314626360, 2644085918303683758, 64393240540265515110, 1632731130253043991252, 43013015553755764179000]

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

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