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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.

A064553 a(1) = 1, a(prime(i)) = i + 1 for i > 0 and a(u * v) = a(u) * a(v) for u, v > 0.

Table of values

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

List of values

[1, 2, 3, 4, 4, 6, 5, 8, 9, 8, 6, 12, 7, 10, 12, 16, 8, 18, 9, 16, 15, 12, 10, 24, 16, 14, 27, 20, 11, 24, 12, 32, 18, 16, 20, 36, 13, 18, 21, 32, 14, 30, 15, 24, 36, 20, 16, 48, 25, 32, 24, 28, 17, 54, 24, 40, 27, 22, 18, 48, 19, 24, 45, 64, 28, 36, 20, 32, 30, 40, 21, 72, 22, 26]

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