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A349925 Dirichlet g.f.: Product_{k>=2} (1 - 2 * k^(-s)).

Table of values

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

List of values

[1, -2, -2, -2, -2, 2, -2, 2, -2, 2, -2, 6, -2, 2, 2, 2, -2, 6, -2, 6, 2, 2, -2, 2, -2, 2, 2, 6, -2, 2, -2, 6, 2, 2, 2, 2, -2, 2, 2, 2, -2, 2, -2, 6, 6, 2, -2, -2, -2, 6, 2, 6, -2, 2, 2, 2, 2, 2, -2, -6, -2, 2, 6, -2, 2, 2, -2, 6, 2, 2, -2, -6, -2, 2, 6]

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