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.

A057670 a(n) = Sum_{k|n} lcm(k, n/k).

Table of values

n a(n)
1 1
2 4
3 6
4 10
5 10
6 24
7 14
8 24
9 21
10 40
11 22
12 60
13 26
14 56
15 60
16 52
17 34
18 84
19 38
20 100
21 84
22 88
23 46
24 144
25 55
26 104
27 72
28 140
29 58
30 240
31 62
32 112
33 132
34 136
35 140
36 210
37 74
38 152
39 156
40 240
41 82
42 336
43 86
44 220
45 210
46 184
47 94
48 312
49 105
50 220
51 204
52 260
53 106
54 288
55 220
56 336
57 228
58 232
59 118
60 600

List of values

[1, 4, 6, 10, 10, 24, 14, 24, 21, 40, 22, 60, 26, 56, 60, 52, 34, 84, 38, 100, 84, 88, 46, 144, 55, 104, 72, 140, 58, 240, 62, 112, 132, 136, 140, 210, 74, 152, 156, 240, 82, 336, 86, 220, 210, 184, 94, 312, 105, 220, 204, 260, 106, 288, 220, 336, 228, 232, 118, 600]