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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.

A307125 Expansion of e.g.f. log(1 - log(1 - x*exp(x))).

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 17
5 123
6 1052
7 10568
8 125750
9 1726189
10 26730394
11 460982300
12 8766443952
13 182229703043
14 4110207945794
15 99970680376908
16 2608221938476016
17 72656914458625593
18 2152355976206481570
19 67562405794276542004
20 2240111797037473955984
21 78229640115171735522015
22 2870092624821982184377202

List of values

[0, 1, 2, 4, 17, 123, 1052, 10568, 125750, 1726189, 26730394, 460982300, 8766443952, 182229703043, 4110207945794, 99970680376908, 2608221938476016, 72656914458625593, 2152355976206481570, 67562405794276542004, 2240111797037473955984, 78229640115171735522015, 2870092624821982184377202]

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

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