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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.

A372882 a(n) = Sum_{k=1..n} gcd(k^3,n).

Table of values

n a(n)
1 1
2 3
3 5
4 10
5 9
6 15
7 13
8 36
9 33
10 27
11 21
12 50
13 25
14 39
15 45
16 104
17 33
18 99
19 37
20 90
21 65
22 63
23 45
24 180
25 145
26 75
27 261
28 130
29 57
30 135
31 61
32 336
33 105
34 99
35 117
36 330
37 73
38 111
39 125
40 324
41 81
42 195
43 85
44 210
45 297
46 135
47 93
48 520
49 385
50 435
51 165
52 250
53 105
54 783
55 189
56 468
57 185
58 171
59 117
60 450

List of values

[1, 3, 5, 10, 9, 15, 13, 36, 33, 27, 21, 50, 25, 39, 45, 104, 33, 99, 37, 90, 65, 63, 45, 180, 145, 75, 261, 130, 57, 135, 61, 336, 105, 99, 117, 330, 73, 111, 125, 324, 81, 195, 85, 210, 297, 135, 93, 520, 385, 435, 165, 250, 105, 783, 189, 468, 185, 171, 117, 450]