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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.

A308298 Expansion of Sum_{k>=1} mu(k)*log(1 + Sum_{j>=1} x^(prime(j)*k))/k.

Table of values

n a(n)
1 0
2 1
3 1
4 -1
5 0
6 -1
7 1
8 0
9 -1
10 -1
11 2
12 1
13 0
14 -3
15 0
16 1
17 3
18 -2
19 -1
20 0
21 4
22 -3
23 -1
24 -5
25 6
26 2
27 2
28 -11
29 4
30 4
31 13
32 -16
33 -5
34 -8
35 30
36 -8
37 -7
38 -33
39 42
40 8
41 16
42 -82
43 27
44 19
45 95
46 -116
47 -21
48 -45
49 223
50 -82
51 -40
52 -264
53 326
54 46
55 135
56 -629
57 242
58 99
59 752
60 -942
61 -105
62 -421
63 1826
64 -717
65 -240

List of values

[0, 1, 1, -1, 0, -1, 1, 0, -1, -1, 2, 1, 0, -3, 0, 1, 3, -2, -1, 0, 4, -3, -1, -5, 6, 2, 2, -11, 4, 4, 13, -16, -5, -8, 30, -8, -7, -33, 42, 8, 16, -82, 27, 19, 95, -116, -21, -45, 223, -82, -40, -264, 326, 46, 135, -629, 242, 99, 752, -942, -105, -421, 1826, -717, -240]