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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.

A337524 a(n) = d(n) * (d(n) - 1), where d is the number of divisors of n (A000005).

Table of values

n a(n)
1 0
2 2
3 2
4 6
5 2
6 12
7 2
8 12
9 6
10 12
11 2
12 30
13 2
14 12
15 12
16 20
17 2
18 30
19 2
20 30
21 12
22 12
23 2
24 56
25 6
26 12
27 12
28 30
29 2
30 56
31 2
32 30
33 12
34 12
35 12
36 72
37 2
38 12
39 12
40 56
41 2
42 56
43 2
44 30
45 30
46 12
47 2
48 90
49 6
50 30
51 12
52 30
53 2
54 56
55 12
56 56
57 12
58 12
59 2
60 132
61 2
62 12
63 30
64 42
65 12
66 56
67 2
68 30
69 12
70 56
71 2
72 132
73 2
74 12
75 30
76 30

List of values

[0, 2, 2, 6, 2, 12, 2, 12, 6, 12, 2, 30, 2, 12, 12, 20, 2, 30, 2, 30, 12, 12, 2, 56, 6, 12, 12, 30, 2, 56, 2, 30, 12, 12, 12, 72, 2, 12, 12, 56, 2, 56, 2, 30, 30, 12, 2, 90, 6, 30, 12, 30, 2, 56, 12, 56, 12, 12, 2, 132, 2, 12, 30, 42, 12, 56, 2, 30, 12, 56, 2, 132, 2, 12, 30, 30]

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