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.

A116477 a(n) = Sum_{1<=k<=n, gcd(k,n)=1} floor(n/k).

Table of values

n a(n)
1 1
2 2
3 4
4 5
5 9
6 7
7 15
8 12
9 18
10 15
11 28
12 16
13 36
14 23
15 31
16 30
17 51
18 26
19 59
20 34
21 50
22 43
23 75
24 37
25 77
26 52
27 72
28 55
29 102
30 42
31 112
32 69
33 90
34 73
35 106
36 61
37 141
38 84
39 109
40 80
41 159
42 66
43 169
44 97
45 119
46 108
47 187
48 84
49 185
50 103
51 155
52 121
53 218
54 97
55 193
56 126
57 179
58 142
59 248
60 95
61 262
62 152
63 185

List of values

[1, 2, 4, 5, 9, 7, 15, 12, 18, 15, 28, 16, 36, 23, 31, 30, 51, 26, 59, 34, 50, 43, 75, 37, 77, 52, 72, 55, 102, 42, 112, 69, 90, 73, 106, 61, 141, 84, 109, 80, 159, 66, 169, 97, 119, 108, 187, 84, 185, 103, 155, 121, 218, 97, 193, 126, 179, 142, 248, 95, 262, 152, 185]