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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.

A326513 Number of set partitions of {1..n} where each block has a different average.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 12
5 40
6 154
7 650
8 3024
9 15110
10 81538
11 468494
12 2863340
13 18481390
14 125838194
15 897725927
16 6715102246
17 52372397021
18 425716871241
19 3594451206166
20 31509992921241
21 285799247349838
22 2682935185643622
23 25990339824995969
24 259777696236210943
25 2673388551328088666

List of values

[1, 1, 2, 4, 12, 40, 154, 650, 3024, 15110, 81538, 468494, 2863340, 18481390, 125838194, 897725927, 6715102246, 52372397021, 425716871241, 3594451206166, 31509992921241, 285799247349838, 2682935185643622, 25990339824995969, 259777696236210943, 2673388551328088666]

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

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