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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.

A069789 Smallest k>n such that sigma(n) divides sigma(k).

Table of values

n a(n)
1 2
2 5
3 6
4 12
5 6
6 11
7 14
8 24
9 18
10 17
11 14
12 28
13 20
14 15
15 23
16 25
17 22
18 45
19 24
20 26
21 31
22 30
23 30
24 38
25 48
26 41
27 54
28 39
29 38
30 46
31 42
32 68
33 35
34 53
35 42
36 117
37 74
38 54
39 60
40 58
41 44
42 62
43 86
44 60
45 90
46 51
47 62
48 75
49 74
50 80
51 55
52 97
53 85
54 56
55 66
56 87
57 79
58 88
59 87
60 78
61 75
62 69
63 103
64 192
65 78
66 70
67 134
68 82
69 77

List of values

[2, 5, 6, 12, 6, 11, 14, 24, 18, 17, 14, 28, 20, 15, 23, 25, 22, 45, 24, 26, 31, 30, 30, 38, 48, 41, 54, 39, 38, 46, 42, 68, 35, 53, 42, 117, 74, 54, 60, 58, 44, 62, 86, 60, 90, 51, 62, 75, 74, 80, 55, 97, 85, 56, 66, 87, 79, 88, 87, 78, 75, 69, 103, 192, 78, 70, 134, 82, 77]

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

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