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.

A369779 a(n) = n * Sum_{p|n, p prime} phi(n/p) / p.

Table of values

n a(n)
1 0
2 1
3 1
4 2
5 1
6 8
7 1
8 8
9 6
10 22
11 1
12 20
13 1
14 44
15 26
16 32
17 1
18 66
19 1
20 48
21 48
22 112
23 1
24 80
25 20
26 158
27 54
28 92
29 1
30 172
31 1
32 128
33 116
34 274
35 62
36 156
37 1
38 344
39 162
40 192
41 1
42 348
43 1
44 228
45 174
46 508
47 1
48 320
49 42
50 540
51 278
52 320
53 1
54 594
55 130
56 368
57 348
58 814
59 1
60 448
61 1
62 932
63 306
64 512
65 176

List of values

[0, 1, 1, 2, 1, 8, 1, 8, 6, 22, 1, 20, 1, 44, 26, 32, 1, 66, 1, 48, 48, 112, 1, 80, 20, 158, 54, 92, 1, 172, 1, 128, 116, 274, 62, 156, 1, 344, 162, 192, 1, 348, 1, 228, 174, 508, 1, 320, 42, 540, 278, 320, 1, 594, 130, 368, 348, 814, 1, 448, 1, 932, 306, 512, 176]