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.

A349712 a(n) = Sum_{d|n} sopf(d) * sopf(n/d).

Table of values

n a(n)
1 0
2 0
3 0
4 4
5 0
6 12
7 0
8 8
9 9
10 20
11 0
12 32
13 0
14 28
15 30
16 12
17 0
18 42
19 0
20 48
21 42
22 44
23 0
24 52
25 25
26 52
27 18
28 64
29 0
30 124
31 0
32 16
33 66
34 68
35 70
36 87
37 0
38 76
39 78
40 76
41 0
42 164
43 0
44 96
45 78
46 92
47 0
48 72
49 49
50 90
51 102
52 112
53 0
54 72
55 110
56 100
57 114
58 116
59 0
60 234
61 0
62 124
63 102
64 20
65 130
66 244
67 0
68 144
69 138
70 236
71 0
72 132
73 0
74 148
75 110

List of values

[0, 0, 0, 4, 0, 12, 0, 8, 9, 20, 0, 32, 0, 28, 30, 12, 0, 42, 0, 48, 42, 44, 0, 52, 25, 52, 18, 64, 0, 124, 0, 16, 66, 68, 70, 87, 0, 76, 78, 76, 0, 164, 0, 96, 78, 92, 0, 72, 49, 90, 102, 112, 0, 72, 110, 100, 114, 116, 0, 234, 0, 124, 102, 20, 130, 244, 0, 144, 138, 236, 0, 132, 0, 148, 110]