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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.

A143140 Total number of all repeated partitions of the n-set {1,2,3,...,n}.

Table of values

n a(n)
0 1
1 1
2 2
3 11
4 83
5 787
6 8965
7 119170
8 1810450
9 30942699
10 587606593
11 12274606775
12 279715819531
13 6905395692990
14 183588212652382
15 5229549060414223
16 158895798308201987
17 5129671140284343035
18 175343720698891809337
19 6326623756471457351814
20 240286954202031694593966

List of values

[1, 1, 2, 11, 83, 787, 8965, 119170, 1810450, 30942699, 587606593, 12274606775, 279715819531, 6905395692990, 183588212652382, 5229549060414223, 158895798308201987, 5129671140284343035, 175343720698891809337, 6326623756471457351814, 240286954202031694593966]

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

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