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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.

A342424 a(n) = Sum_{k=1..n} gcd(k,n)^(n/gcd(k,n)).

Table of values

n a(n)
1 1
2 3
3 5
4 10
5 9
6 33
7 13
8 60
9 69
10 167
11 21
12 470
13 25
14 837
15 1245
16 1624
17 33
18 5067
19 37
20 9570
21 13841
22 20633
23 45
24 54612
25 12545
26 98511
27 119601
28 201646
29 57
30 562957
31 61
32 794928
33 1774185
34 2097491
35 536037
36 5381754
37 73
38 9437601
39 19136333
40 14296940

List of values

[1, 3, 5, 10, 9, 33, 13, 60, 69, 167, 21, 470, 25, 837, 1245, 1624, 33, 5067, 37, 9570, 13841, 20633, 45, 54612, 12545, 98511, 119601, 201646, 57, 562957, 61, 794928, 1774185, 2097491, 536037, 5381754, 73, 9437601, 19136333, 14296940]