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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.

A356674 a(n) = n! * Sum_{k=0..n} k^(k*(n-k))/k!.

Table of values

n a(n)
0 1
1 2
2 5
3 25
4 349
5 19941
6 4440391
7 4382699203
8 17687865017481
9 356274213630958297
10 33338407933090938442411
11 16214021627369697901867402911
12 43817834057167927861655409052462093
13 595284492835035398061242850538179192931525

List of values

[1, 2, 5, 25, 349, 19941, 4440391, 4382699203, 17687865017481, 356274213630958297, 33338407933090938442411, 16214021627369697901867402911, 43817834057167927861655409052462093, 595284492835035398061242850538179192931525]

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

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