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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.

A352483 Numerator of 1/d - 1/n = (n-d)/(n*d) where d is the number of divisors of n (A000005).

Table of values

n a(n)
1 0
2 0
3 1
4 1
5 3
6 1
7 5
8 1
9 2
10 3
11 9
12 1
13 11
14 5
15 11
16 11
17 15
18 1
19 17
20 7
21 17
22 9
23 21
24 1
25 22
26 11
27 23
28 11
29 27
30 11
31 29
32 13
33 29
34 15
35 31
36 1
37 35
38 17
39 35
40 1
41 39
42 17
43 41
44 19
45 13
46 21
47 45
48 19
49 46
50 11
51 47
52 23
53 51
54 23
55 51
56 3
57 53
58 27
59 57
60 1
61 59
62 29
63 19
64 57
65 61
66 29
67 65
68 31
69 65
70 31
71 69
72 5
73 71
74 35
75 23
76 35
77 73

List of values

[0, 0, 1, 1, 3, 1, 5, 1, 2, 3, 9, 1, 11, 5, 11, 11, 15, 1, 17, 7, 17, 9, 21, 1, 22, 11, 23, 11, 27, 11, 29, 13, 29, 15, 31, 1, 35, 17, 35, 1, 39, 17, 41, 19, 13, 21, 45, 19, 46, 11, 47, 23, 51, 23, 51, 3, 53, 27, 57, 1, 59, 29, 19, 57, 61, 29, 65, 31, 65, 31, 69, 5, 71, 35, 23, 35, 73]

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

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