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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.

A332533 a(n) = (1/n) * Sum_{k=1..n} floor(n/k) * n^k.

Table of values

n a(n)
1 1
2 4
3 15
4 92
5 790
6 9384
7 137326
8 2397352
9 48428487
10 1111122360
11 28531183329
12 810554859732
13 25239592620853
14 854769763924104
15 31278135039463245
16 1229782938533709200
17 51702516368332126932
18 2314494592676172411516
19 109912203092257573556274
20 5518821052632117898282620

List of values

[1, 4, 15, 92, 790, 9384, 137326, 2397352, 48428487, 1111122360, 28531183329, 810554859732, 25239592620853, 854769763924104, 31278135039463245, 1229782938533709200, 51702516368332126932, 2314494592676172411516, 109912203092257573556274, 5518821052632117898282620]

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

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