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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.

A384938 Number for rooted ordered trees with edge weights summing to n, where edge weights are all greater than zero, and the sequences of edge weights in all downward paths are strictly increasing.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 11
5 26
6 61
7 142
8 334
9 785
10 1845
11 4339
12 10211
13 24030
14 56560
15 133143
16 313433
17 737906
18 1737275
19 4090206
20 9630067
21 22673482
22 53383917
23 125691264
24 295938451
25 696785116
26 1640579144
27 3862745470
28 9094847357
29 21413863699
30 50419073794
31 118712060012
32 279508439419

List of values

[1, 1, 2, 5, 11, 26, 61, 142, 334, 785, 1845, 4339, 10211, 24030, 56560, 133143, 313433, 737906, 1737275, 4090206, 9630067, 22673482, 53383917, 125691264, 295938451, 696785116, 1640579144, 3862745470, 9094847357, 21413863699, 50419073794, 118712060012, 279508439419]

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

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