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.

A001615 Dedekind psi function: n * Product_{p|n, p prime} (1 + 1/p).

Table of values

n a(n)
1 1
2 3
3 4
4 6
5 6
6 12
7 8
8 12
9 12
10 18
11 12
12 24
13 14
14 24
15 24
16 24
17 18
18 36
19 20
20 36
21 32
22 36
23 24
24 48
25 30
26 42
27 36
28 48
29 30
30 72
31 32
32 48
33 48
34 54
35 48
36 72
37 38
38 60
39 56
40 72
41 42
42 96
43 44
44 72
45 72
46 72
47 48
48 96
49 56
50 90
51 72
52 84
53 54
54 108
55 72
56 96
57 80
58 90
59 60
60 144
61 62
62 96
63 96
64 96
65 84
66 144
67 68
68 108
69 96

List of values

[1, 3, 4, 6, 6, 12, 8, 12, 12, 18, 12, 24, 14, 24, 24, 24, 18, 36, 20, 36, 32, 36, 24, 48, 30, 42, 36, 48, 30, 72, 32, 48, 48, 54, 48, 72, 38, 60, 56, 72, 42, 96, 44, 72, 72, 72, 48, 96, 56, 90, 72, 84, 54, 108, 72, 96, 80, 90, 60, 144, 62, 96, 96, 96, 84, 144, 68, 108, 96]