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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.

A351746 a(n) = Sum_{p|n, p prime} (p-1) * tau(n/p).

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 4
6 6
7 6
8 3
9 4
10 10
11 10
12 10
13 12
14 14
15 12
16 4
17 16
18 11
19 18
20 16
21 16
22 22
23 22
24 14
25 8
26 26
27 6
28 22
29 28
30 28
31 30
32 5
33 24
34 34
35 20
36 18
37 36
38 38
39 28
40 22
41 40
42 36
43 42
44 34
45 20
46 46
47 46
48 18
49 12
50 19
51 36
52 40
53 52
54 16
55 28
56 30
57 40
58 58
59 58
60 44
61 60
62 62
63 26
64 6
65 32
66 52
67 66
68 52
69 48
70 44
71 70
72 25
73 72
74 74

List of values

[0, 1, 2, 2, 4, 6, 6, 3, 4, 10, 10, 10, 12, 14, 12, 4, 16, 11, 18, 16, 16, 22, 22, 14, 8, 26, 6, 22, 28, 28, 30, 5, 24, 34, 20, 18, 36, 38, 28, 22, 40, 36, 42, 34, 20, 46, 46, 18, 12, 19, 36, 40, 52, 16, 28, 30, 40, 58, 58, 44, 60, 62, 26, 6, 32, 52, 66, 52, 48, 44, 70, 25, 72, 74]

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