cp's OEIS Frontend

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.

A347229 Sum of A344695 [gcd(sigma(n), psi(n))] and its Dirichlet inverse.

Table of values

n a(n)
1 2
2 0
3 0
4 9
5 0
6 24
7 0
8 -21
9 16
10 36
11 0
12 -28
13 0
14 48
15 48
16 73
17 0
18 -42
19 0
20 -42
21 64
22 72
23 0
24 108
25 36
26 84
27 -56
28 -56
29 0
30 0
31 0
32 -213
33 96
34 108
35 96
36 121
37 0
38 120
39 112
40 162
41 0
42 0
43 0
44 -84
45 -84
46 144
47 0
48 -284
49 64
50 -102
51 144
52 -98
53 0
54 192
55 144
56 216
57 160
58 180
59 0
60 216
61 0
62 192
63 -112
64 649
65 168
66 0
67 0
68 -126
69 192
70 0
71 0
72 -357
73 0
74 228
75 -136

List of values

[2, 0, 0, 9, 0, 24, 0, -21, 16, 36, 0, -28, 0, 48, 48, 73, 0, -42, 0, -42, 64, 72, 0, 108, 36, 84, -56, -56, 0, 0, 0, -213, 96, 108, 96, 121, 0, 120, 112, 162, 0, 0, 0, -84, -84, 144, 0, -284, 64, -102, 144, -98, 0, 192, 144, 216, 160, 180, 0, 216, 0, 192, -112, 649, 168, 0, 0, -126, 192, 0, 0, -357, 0, 228, -136]