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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.

A370820 Number of positive integers that are a divisor of some prime index of n.

Table of values

n a(n)
1 0
2 1
3 2
4 1
5 2
6 2
7 3
8 1
9 2
10 2
11 2
12 2
13 4
14 3
15 3
16 1
17 2
18 2
19 4
20 2
21 3
22 2
23 3
24 2
25 2
26 4
27 2
28 3
29 4
30 3
31 2
32 1
33 3
34 2
35 4
36 2
37 6
38 4
39 4
40 2
41 2
42 3
43 4
44 2
45 3
46 3
47 4
48 2
49 3
50 2
51 3
52 4
53 5
54 2
55 3
56 3
57 4
58 4
59 2
60 3
61 6
62 2
63 3
64 1
65 4
66 3
67 2
68 2
69 4
70 4
71 6
72 2
73 4
74 6
75 3
76 4
77 4
78 4
79 4
80 2
81 2
82 2
83 2
84 3
85 3
86 4
87 4

List of values

[0, 1, 2, 1, 2, 2, 3, 1, 2, 2, 2, 2, 4, 3, 3, 1, 2, 2, 4, 2, 3, 2, 3, 2, 2, 4, 2, 3, 4, 3, 2, 1, 3, 2, 4, 2, 6, 4, 4, 2, 2, 3, 4, 2, 3, 3, 4, 2, 3, 2, 3, 4, 5, 2, 3, 3, 4, 4, 2, 3, 6, 2, 3, 1, 4, 3, 2, 2, 4, 4, 6, 2, 4, 6, 3, 4, 4, 4, 4, 2, 2, 2, 2, 3, 3, 4, 4]

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