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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.

A318491 a(n) is the numerator of Sum_{d|n} Sum_{j|d} 1/j.

Table of values

n a(n)
1 1
2 5
3 7
4 17
5 11
6 35
7 15
8 49
9 34
10 11
11 23
12 119
13 27
14 75
15 77
16 129
17 35
18 85
19 39
20 187
21 5
22 115
23 47
24 343
25 86
26 135
27 142
28 255
29 59
30 77
31 63
32 321
33 161
34 175
35 33
36 289
37 75
38 195
39 63
40 539
41 83
42 25
43 87
44 391
45 374
46 235
47 95
48 301
49 162
50 43
51 245
52 459
53 107
54 355
55 23
56 105
57 91
58 295
59 119
60 1309
61 123
62 315
63 170
64 769
65 297

List of values

[1, 5, 7, 17, 11, 35, 15, 49, 34, 11, 23, 119, 27, 75, 77, 129, 35, 85, 39, 187, 5, 115, 47, 343, 86, 135, 142, 255, 59, 77, 63, 321, 161, 175, 33, 289, 75, 195, 63, 539, 83, 25, 87, 391, 374, 235, 95, 301, 162, 43, 245, 459, 107, 355, 23, 105, 91, 295, 119, 1309, 123, 315, 170, 769, 297]