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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.

A299426 E.g.f. Sum_{n>=0} Series_Reversion( x*exp(-n*x) )^n.

Table of values

n a(n)
0 1
1 1
2 4
3 39
4 688
5 18765
6 722016
7 37003267
8 2426725120
9 197569640889
10 19498786969600
11 2288864397602871
12 314642887620065280
13 50002239358837749061
14 9086161251793519280128
15 1870292375864728408312875
16 432549223770637009573052416
17 111598253780454986901562293489
18 31918043775392401233962828169216
19 10063176613379061071841096012386911
20 3479934178969181147698311417364480000

List of values

[1, 1, 4, 39, 688, 18765, 722016, 37003267, 2426725120, 197569640889, 19498786969600, 2288864397602871, 314642887620065280, 50002239358837749061, 9086161251793519280128, 1870292375864728408312875, 432549223770637009573052416, 111598253780454986901562293489, 31918043775392401233962828169216, 10063176613379061071841096012386911, 3479934178969181147698311417364480000]

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