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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.

A349384 Dirichlet convolution of A003961 with the Dirichlet inverse of A048673, where A003961 is fully multiplicative with a(p) = nextprime(p), and A048673(n) = (1+A003961(n))/2.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 3
6 0
7 5
8 4
9 6
10 0
11 6
12 -2
13 8
14 0
15 0
16 8
17 9
18 -4
19 11
20 -3
21 0
22 0
23 14
24 -8
25 12
26 0
27 18
28 -5
29 15
30 -12
31 18
32 16
33 0
34 0
35 0
36 -14
37 20
38 0
39 0
40 -12
41 21
42 -20
43 23
44 -6
45 -12
46 0
47 26
48 -24
49 30
50 -9
51 0
52 -8
53 29
54 -24
55 0
56 -20
57 0
58 0
59 30
60 -24
61 33
62 0
63 -20
64 32
65 0
66 -24
67 35
68 -9
69 0
70 -30
71 36
72 -36
73 39
74 0
75 -18
76 -11
77 0
78 -32
79 41
80 -36
81 54
82 0
83 44

List of values

[1, 1, 2, 2, 3, 0, 5, 4, 6, 0, 6, -2, 8, 0, 0, 8, 9, -4, 11, -3, 0, 0, 14, -8, 12, 0, 18, -5, 15, -12, 18, 16, 0, 0, 0, -14, 20, 0, 0, -12, 21, -20, 23, -6, -12, 0, 26, -24, 30, -9, 0, -8, 29, -24, 0, -20, 0, 0, 30, -24, 33, 0, -20, 32, 0, -24, 35, -9, 0, -30, 36, -36, 39, 0, -18, -11, 0, -32, 41, -36, 54, 0, 44]