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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.

A345098 a(n) = Sum_{k=1..n} floor(n/k)^floor(n/k).

Table of values

n a(n)
1 1
2 5
3 29
4 262
5 3132
6 46690
7 823578
8 16777484
9 387420781
10 10000003165
11 285311673777
12 8916100495209
13 302875106639207
14 11112006826381861
15 437893890381686113
16 18446744073726332260
17 827240261886353544822
18 39346408075296925042900

List of values

[1, 5, 29, 262, 3132, 46690, 823578, 16777484, 387420781, 10000003165, 285311673777, 8916100495209, 302875106639207, 11112006826381861, 437893890381686113, 18446744073726332260, 827240261886353544822, 39346408075296925042900]

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

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