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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.

A305051 a(n) = n! * [x^n] exp(exp(x) - 1)/(1 - x)^n.

Table of values

n a(n)
0 1
1 2
2 12
3 119
4 1655
5 29647
6 649925
7 16852656
8 504519916
9 17124927207
10 649856846635
11 27262957861405
12 1252893494644357
13 62593349657218070
14 3377648236341185084
15 195782612085816693995
16 12131925601060324633027
17 800321307922970722566527
18 55998398887720317868148977

List of values

[1, 2, 12, 119, 1655, 29647, 649925, 16852656, 504519916, 17124927207, 649856846635, 27262957861405, 1252893494644357, 62593349657218070, 3377648236341185084, 195782612085816693995, 12131925601060324633027, 800321307922970722566527, 55998398887720317868148977]

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

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