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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.

A349711 a(n) = Sum_{d|n} sopfr(d) * sopfr(n/d).

Table of values

n a(n)
1 0
2 0
3 0
4 4
5 0
6 12
7 0
8 16
9 9
10 20
11 0
12 44
13 0
14 28
15 30
16 40
17 0
18 54
19 0
20 68
21 42
22 44
23 0
24 104
25 25
26 52
27 36
28 92
29 0
30 124
31 0
32 80
33 66
34 68
35 70
36 147
37 0
38 76
39 78
40 152
41 0
42 164
43 0
44 140
45 108
46 92
47 0
48 200
49 49
50 110
51 102
52 164
53 0
54 144
55 110
56 200
57 114
58 116
59 0
60 298
61 0
62 124
63 144
64 140
65 130
66 244
67 0
68 212
69 138
70 236
71 0
72 300
73 0
74 148
75 140

List of values

[0, 0, 0, 4, 0, 12, 0, 16, 9, 20, 0, 44, 0, 28, 30, 40, 0, 54, 0, 68, 42, 44, 0, 104, 25, 52, 36, 92, 0, 124, 0, 80, 66, 68, 70, 147, 0, 76, 78, 152, 0, 164, 0, 140, 108, 92, 0, 200, 49, 110, 102, 164, 0, 144, 110, 200, 114, 116, 0, 298, 0, 124, 144, 140, 130, 244, 0, 212, 138, 236, 0, 300, 0, 148, 140]

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