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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.

A163163 a(n) = sigma(n) + tau(n) - n.

Table of values

n a(n)
1 1
2 3
3 3
4 6
5 3
6 10
7 3
8 11
9 7
10 12
11 3
12 22
13 3
14 14
15 13
16 20
17 3
18 27
19 3
20 28
21 15
22 18
23 3
24 44
25 9
26 20
27 17
28 34
29 3
30 50
31 3
32 37
33 19
34 24
35 17
36 64
37 3
38 26
39 21
40 58
41 3
42 62
43 3
44 46
45 39
46 30
47 3
48 86
49 11
50 49
51 25
52 52
53 3
54 74
55 21
56 72
57 27
58 36
59 3
60 120
61 3
62 38
63 47
64 70
65 23
66 86
67 3
68 64
69 31
70 82
71 3
72 135
73 3
74 44
75 55
76 70
77 23
78 98
79 3

List of values

[1, 3, 3, 6, 3, 10, 3, 11, 7, 12, 3, 22, 3, 14, 13, 20, 3, 27, 3, 28, 15, 18, 3, 44, 9, 20, 17, 34, 3, 50, 3, 37, 19, 24, 17, 64, 3, 26, 21, 58, 3, 62, 3, 46, 39, 30, 3, 86, 11, 49, 25, 52, 3, 74, 21, 72, 27, 36, 3, 120, 3, 38, 47, 70, 23, 86, 3, 64, 31, 82, 3, 135, 3, 44, 55, 70, 23, 98, 3]

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