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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.

A348393 a(n) = Sum_{d|n} (n^d)', where ' is the arithmetic derivative.

Table of values

n a(n)
1 0
2 5
3 28
4 1060
5 3126
6 233885
7 823544
8 201351372
9 2324524398
10 70000350147
11 285311670612
12 142657631177872
13 302875106592254
14 100008061904383173
15 3503151123048905408
16 590295810427425653792
17 827240261886336764178
18 826274569583310299739525
19 1978419655660313589123980
20 2516582400000122880019968984

List of values

[0, 5, 28, 1060, 3126, 233885, 823544, 201351372, 2324524398, 70000350147, 285311670612, 142657631177872, 302875106592254, 100008061904383173, 3503151123048905408, 590295810427425653792, 827240261886336764178, 826274569583310299739525, 1978419655660313589123980, 2516582400000122880019968984]

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

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