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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.

A302606 a(n) = n! * [x^n] exp(n*x)*arcsinh(x).

Table of values

n a(n)
0 0
1 1
2 4
3 26
4 240
5 2884
6 42660
7 748544
8 15185856
9 349574544
10 9000902500
11 256293989984
12 7996078704240
13 271246034903232
14 9939835626507332
15 391303051339622400
16 16469438021801262848
17 737992773619777599744
18 35077254665501330210628
19 1762671472887447792620032

List of values

[0, 1, 4, 26, 240, 2884, 42660, 748544, 15185856, 349574544, 9000902500, 256293989984, 7996078704240, 271246034903232, 9939835626507332, 391303051339622400, 16469438021801262848, 737992773619777599744, 35077254665501330210628, 1762671472887447792620032]

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

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