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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.

A334240 a(n) = exp(-n) * Sum_{k>=0} (k + 1)^n * n^k / k!.

Table of values

n a(n)
0 1
1 2
2 11
3 103
4 1357
5 23031
6 478207
7 11741094
8 332734521
9 10689163687
10 383851610331
11 15236978883127
12 662491755803269
13 31311446539427926
14 1598351161031967063
15 87638233726766111731
16 5136809177699534717169
17 320521818480481139673919
18 21212211430440994022892019

List of values

[1, 2, 11, 103, 1357, 23031, 478207, 11741094, 332734521, 10689163687, 383851610331, 15236978883127, 662491755803269, 31311446539427926, 1598351161031967063, 87638233726766111731, 5136809177699534717169, 320521818480481139673919, 21212211430440994022892019]

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

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