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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.

A330260 a(n) = n! * Sum_{k=0..n} binomial(n,k) * n^(n - k) / k!.

Table of values

n a(n)
0 1
1 2
2 17
3 352
4 13505
5 830126
6 74717857
7 9263893892
8 1513712421377
9 315230799073690
10 81499084718806001
11 25612081645835777192
12 9615370149488574778177
13 4250194195208050117007942
14 2184834047906975645398282625
15 1292386053018890618812398220876

List of values

[1, 2, 17, 352, 13505, 830126, 74717857, 9263893892, 1513712421377, 315230799073690, 81499084718806001, 25612081645835777192, 9615370149488574778177, 4250194195208050117007942, 2184834047906975645398282625, 1292386053018890618812398220876]

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

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