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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.

A382840 a(n) = Sum_{k=0..n} binomial(n+k-1,k) * Stirling1(n,k) * k!.

Table of values

n a(n)
0 1
1 1
2 4
3 30
4 316
5 4290
6 71268
7 1400112
8 31750416
9 816215760
10 23455342560
11 745073660496
12 25924233481056
13 980518650296640
14 40054724743501440
15 1757539560656401920
16 82439565962427760896
17 4116529729771939393920
18 218017561353648160158720
19 12206586491422209675532800

List of values

[1, 1, 4, 30, 316, 4290, 71268, 1400112, 31750416, 816215760, 23455342560, 745073660496, 25924233481056, 980518650296640, 40054724743501440, 1757539560656401920, 82439565962427760896, 4116529729771939393920, 218017561353648160158720, 12206586491422209675532800]

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

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