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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.

A318059 a(n) is the numerator of sigma(sigma(n))/n.

Table of values

n a(n)
1 1
2 2
3 7
4 2
5 12
6 14
7 15
8 3
9 14
10 39
11 28
12 14
13 24
14 30
15 4
16 2
17 39
18 28
19 42
20 24
21 3
22 91
23 60
24 7
25 32
26 48
27 10
28 30
29 72
30 13
31 63
32 13
33 124
34 60
35 124
36 28
37 60
38 84
39 40
40 117
41 96
42 6
43 84
44 56
45 56
46 195
47 124
48 14
49 80
50 64
51 65
52 171
53 120
54 20
55 39
56 45
57 62
58 117
59 168
60 8
61 96
62 126
63 10
64 2
65 224
66 403
67 126
68 78
69 84
70 403

List of values

[1, 2, 7, 2, 12, 14, 15, 3, 14, 39, 28, 14, 24, 30, 4, 2, 39, 28, 42, 24, 3, 91, 60, 7, 32, 48, 10, 30, 72, 13, 63, 13, 124, 60, 124, 28, 60, 84, 40, 117, 96, 6, 84, 56, 56, 195, 124, 14, 80, 64, 65, 171, 120, 20, 39, 45, 62, 117, 168, 8, 96, 126, 10, 2, 224, 403, 126, 78, 84, 403]

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

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