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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.

A054020 Chowla's function of n is not divisible by the number of proper divisors of n.

Table of values

n a(n)
1 6
2 9
3 10
4 15
5 16
6 20
7 21
8 22
9 25
10 28
11 30
12 33
13 34
14 36
15 39
16 42
17 44
18 45
19 46
20 48
21 49
22 50
23 51
24 54
25 55
26 57
27 58
28 60
29 64
30 68
31 69
32 70
33 72
34 75
35 76
36 78
37 80
38 81
39 82
40 84
41 85
42 87
43 91
44 93
45 94
46 96
47 98
48 99
49 100
50 102
51 105
52 106
53 108
54 111
55 114
56 115
57 116
58 117
59 118
60 120
61 121
62 123
63 124
64 126

List of values

[6, 9, 10, 15, 16, 20, 21, 22, 25, 28, 30, 33, 34, 36, 39, 42, 44, 45, 46, 48, 49, 50, 51, 54, 55, 57, 58, 60, 64, 68, 69, 70, 72, 75, 76, 78, 80, 81, 82, 84, 85, 87, 91, 93, 94, 96, 98, 99, 100, 102, 105, 106, 108, 111, 114, 115, 116, 117, 118, 120, 121, 123, 124, 126]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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