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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.

A332684 a(n) = Sum_{k=1..n} mu(gcd(n, k)) * floor(n/k).

Table of values

n a(n)
1 1
2 1
3 3
4 3
5 8
6 2
7 14
8 7
9 14
10 5
11 27
12 6
13 35
14 7
15 19
16 18
17 50
18 5
19 58
20 16
21 32
22 14
23 74
24 14
25 68
26 15
27 54
28 29
29 101
30 3
31 111
32 39
33 59
34 21
35 83
36 26
37 140
38 24
39 70
40 39
41 158
42 6
43 168
44 51
45 74
46 32
47 186
48 29
49 170
50 20
51 101
52 66
53 217
54 17
55 157
56 64
57 117
58 39
59 247
60 28
61 261
62 39
63 121
64 92
65 194

List of values

[1, 1, 3, 3, 8, 2, 14, 7, 14, 5, 27, 6, 35, 7, 19, 18, 50, 5, 58, 16, 32, 14, 74, 14, 68, 15, 54, 29, 101, 3, 111, 39, 59, 21, 83, 26, 140, 24, 70, 39, 158, 6, 168, 51, 74, 32, 186, 29, 170, 20, 101, 66, 217, 17, 157, 64, 117, 39, 247, 28, 261, 39, 121, 92, 194]