cp's OEIS Frontend

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.

A057020 Numerator of (sum of divisors of n / number of divisors of n).

Table of values

n a(n)
1 1
2 3
3 2
4 7
5 3
6 3
7 4
8 15
9 13
10 9
11 6
12 14
13 7
14 6
15 6
16 31
17 9
18 13
19 10
20 7
21 8
22 9
23 12
24 15
25 31
26 21
27 10
28 28
29 15
30 9
31 16
32 21
33 12
34 27
35 12
36 91
37 19
38 15
39 14
40 45
41 21
42 12
43 22
44 14
45 13
46 18
47 24
48 62
49 19
50 31
51 18
52 49
53 27
54 15
55 18
56 15
57 20
58 45
59 30
60 14
61 31
62 24
63 52
64 127
65 21
66 18
67 34
68 21
69 24
70 18

List of values

[1, 3, 2, 7, 3, 3, 4, 15, 13, 9, 6, 14, 7, 6, 6, 31, 9, 13, 10, 7, 8, 9, 12, 15, 31, 21, 10, 28, 15, 9, 16, 21, 12, 27, 12, 91, 19, 15, 14, 45, 21, 12, 22, 14, 13, 18, 24, 62, 19, 31, 18, 49, 27, 15, 18, 15, 20, 45, 30, 14, 31, 24, 52, 127, 21, 18, 34, 21, 24, 18]

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

Content is available under The OEIS End-User License Agreement.