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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.

A326305 Dirichlet g.f.: zeta(s-1) * (1 - 2^(-s)) / zeta(s).

Table of values

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

List of values

[1, 0, 2, 1, 4, 0, 6, 2, 6, 0, 10, 2, 12, 0, 8, 4, 16, 0, 18, 4, 12, 0, 22, 4, 20, 0, 18, 6, 28, 0, 30, 8, 20, 0, 24, 6, 36, 0, 24, 8, 40, 0, 42, 10, 24, 0, 46, 8, 42, 0, 32, 12, 52, 0, 40, 12, 36, 0, 58, 8, 60, 0, 36, 16, 48, 0, 66, 16, 44, 0, 70, 12, 72, 0, 40]

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