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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.

A284152 a(n) = Sum_{d|n, d == 2 or 3 mod 5} d.

Table of values

n a(n)
1 0
2 2
3 3
4 2
5 0
6 5
7 7
8 10
9 3
10 2
11 0
12 17
13 13
14 9
15 3
16 10
17 17
18 23
19 0
20 2
21 10
22 24
23 23
24 25
25 0
26 15
27 30
28 37
29 0
30 5
31 0
32 42
33 36
34 19
35 7
36 35
37 37
38 40
39 16
40 10
41 0
42 54
43 43
44 24
45 3
46 25
47 47
48 73
49 7
50 2
51 20
52 67
53 53
54 50
55 0
56 45
57 60
58 60
59 0
60 17
61 0
62 64
63 73
64 42
65 13
66 60
67 67
68 87
69 26
70 9
71 0
72 115
73 73

List of values

[0, 2, 3, 2, 0, 5, 7, 10, 3, 2, 0, 17, 13, 9, 3, 10, 17, 23, 0, 2, 10, 24, 23, 25, 0, 15, 30, 37, 0, 5, 0, 42, 36, 19, 7, 35, 37, 40, 16, 10, 0, 54, 43, 24, 3, 25, 47, 73, 7, 2, 20, 67, 53, 50, 0, 45, 60, 60, 0, 17, 0, 64, 73, 42, 13, 60, 67, 87, 26, 9, 0, 115, 73]

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