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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.

A188999 Bi-unitary sigma: sum of the bi-unitary divisors of n.

Table of values

n a(n)
1 1
2 3
3 4
4 5
5 6
6 12
7 8
8 15
9 10
10 18
11 12
12 20
13 14
14 24
15 24
16 27
17 18
18 30
19 20
20 30
21 32
22 36
23 24
24 60
25 26
26 42
27 40
28 40
29 30
30 72
31 32
32 63
33 48
34 54
35 48
36 50
37 38
38 60
39 56
40 90
41 42
42 96
43 44
44 60
45 60
46 72
47 48
48 108
49 50
50 78
51 72
52 70
53 54
54 120
55 72
56 120
57 80
58 90
59 60
60 120
61 62
62 96
63 80
64 119
65 84
66 144
67 68
68 90
69 96
70 144
71 72
72 150
73 74
74 114
75 104
76 100

List of values

[1, 3, 4, 5, 6, 12, 8, 15, 10, 18, 12, 20, 14, 24, 24, 27, 18, 30, 20, 30, 32, 36, 24, 60, 26, 42, 40, 40, 30, 72, 32, 63, 48, 54, 48, 50, 38, 60, 56, 90, 42, 96, 44, 60, 60, 72, 48, 108, 50, 78, 72, 70, 54, 120, 72, 120, 80, 90, 60, 120, 62, 96, 80, 119, 84, 144, 68, 90, 96, 144, 72, 150, 74, 114, 104, 100]

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