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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.

A175081 Values taken by the sum of perfect divisors of n (A175067) sorted into ascending order.

Table of values

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

List of values

[1, 2, 3, 5, 6, 6, 7, 10, 10, 11, 12, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 22, 23, 24, 26, 28, 29, 30, 30, 30, 31, 33, 34, 34, 35, 37, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73]

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

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