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.

A234519 Natural numbers n sorted by decreasing values of number k(n) = sigma(n)^(1/n), where sigma(n) = A000203(n) = the sum of divisors of n.

Table of values

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

List of values

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

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

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