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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.

A085020 a(n) = Sum_{d|n, (d+1) prime} (d + 1).

Table of values

n a(n)
1 2
2 5
3 2
4 10
5 2
6 12
7 2
8 10
9 2
10 16
11 2
12 30
13 2
14 5
15 2
16 27
17 2
18 31
19 2
20 21
21 2
22 28
23 2
24 30
25 2
26 5
27 2
28 39
29 2
30 54
31 2
32 27
33 2
34 5
35 2
36 86
37 2
38 5
39 2
40 62
41 2
42 55
43 2
44 33
45 2
46 52
47 2
48 47
49 2
50 16
51 2
52 63
53 2
54 31
55 2
56 39
57 2
58 64
59 2
60 133
61 2
62 5
63 2
64 27
65 2
66 102
67 2
68 10
69 2
70 87
71 2
72 159
73 2
74 5
75 2
76 10
77 2
78 91
79 2
80 79
81 2
82 88
83 2
84 102
85 2
86 5

List of values

[2, 5, 2, 10, 2, 12, 2, 10, 2, 16, 2, 30, 2, 5, 2, 27, 2, 31, 2, 21, 2, 28, 2, 30, 2, 5, 2, 39, 2, 54, 2, 27, 2, 5, 2, 86, 2, 5, 2, 62, 2, 55, 2, 33, 2, 52, 2, 47, 2, 16, 2, 63, 2, 31, 2, 39, 2, 64, 2, 133, 2, 5, 2, 27, 2, 102, 2, 10, 2, 87, 2, 159, 2, 5, 2, 10, 2, 91, 2, 79, 2, 88, 2, 102, 2, 5]

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