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.

A332730 a(n) = Sum_{d|n} tau(d/gcd(d, n/d)), where tau = A000005.

Table of values

n a(n)
1 1
2 3
3 3
4 5
5 3
6 9
7 3
8 8
9 5
10 9
11 3
12 15
13 3
14 9
15 9
16 11
17 3
18 15
19 3
20 15
21 9
22 9
23 3
24 24
25 5
26 9
27 8
28 15
29 3
30 27
31 3
32 15
33 9
34 9
35 9
36 25
37 3
38 9
39 9
40 24
41 3
42 27
43 3
44 15
45 15
46 9
47 3
48 33
49 5
50 15
51 9
52 15
53 3
54 24
55 9
56 24
57 9
58 9
59 3
60 45
61 3
62 9
63 15
64 19
65 9
66 27
67 3
68 15
69 9
70 27
71 3
72 40
73 3
74 9
75 15

List of values

[1, 3, 3, 5, 3, 9, 3, 8, 5, 9, 3, 15, 3, 9, 9, 11, 3, 15, 3, 15, 9, 9, 3, 24, 5, 9, 8, 15, 3, 27, 3, 15, 9, 9, 9, 25, 3, 9, 9, 24, 3, 27, 3, 15, 15, 9, 3, 33, 5, 15, 9, 15, 3, 24, 9, 24, 9, 9, 3, 45, 3, 9, 15, 19, 9, 27, 3, 15, 9, 27, 3, 40, 3, 9, 15]