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.

A069914 a(n) = Sum_{d|n} (d-1)*sigma(n/d).

Table of values

n a(n)
1 0
2 1
3 2
4 6
5 4
6 15
7 6
8 23
9 16
10 27
11 10
12 64
13 12
14 39
15 42
16 72
17 16
18 98
19 18
20 110
21 60
22 63
23 22
24 213
25 48
26 75
27 84
28 156
29 28
30 245
31 30
32 201
33 96
34 99
35 102
36 380
37 36
38 111
39 114
40 357
41 40
42 345
43 42
44 248
45 248
46 135
47 46
48 618
49 96
50 278
51 150
52 294
53 52
54 478
55 162
56 501
57 168
58 171
59 58
60 924
61 60
62 183

List of values

[0, 1, 2, 6, 4, 15, 6, 23, 16, 27, 10, 64, 12, 39, 42, 72, 16, 98, 18, 110, 60, 63, 22, 213, 48, 75, 84, 156, 28, 245, 30, 201, 96, 99, 102, 380, 36, 111, 114, 357, 40, 345, 42, 248, 248, 135, 46, 618, 96, 278, 150, 294, 52, 478, 162, 501, 168, 171, 58, 924, 60, 183]