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.

A339384 a(n) = Sum_{k=1..n} (lcm(n,k)/gcd(n,k) mod n).

Table of values

n a(n)
1 0
2 1
3 1
4 3
5 1
6 6
7 1
8 11
9 10
10 13
11 1
12 28
13 1
14 24
15 30
16 51
17 1
18 57
19 1
20 89
21 52
22 58
23 1
24 120
25 51
26 81
27 91
28 166
29 1
30 148
31 1
32 211
33 120
34 139
35 128
36 307
37 1
38 174
39 166
40 357
41 1
42 363
43 1
44 404
45 348
46 256
47 1
48 544
49 148
50 403
51 282
52 565
53 1
54 588
55 271
56 714
57 352
58 409
59 1
60 822
61 1
62 468
63 652
64 915

List of values

[0, 1, 1, 3, 1, 6, 1, 11, 10, 13, 1, 28, 1, 24, 30, 51, 1, 57, 1, 89, 52, 58, 1, 120, 51, 81, 91, 166, 1, 148, 1, 211, 120, 139, 128, 307, 1, 174, 166, 357, 1, 363, 1, 404, 348, 256, 1, 544, 148, 403, 282, 565, 1, 588, 271, 714, 352, 409, 1, 822, 1, 468, 652, 915]