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.

A380143 Sum of divisors d | k such that d and k/d share factors but both have a factor that does not divide the other, where k is in A375055.

Table of values

n a(n)
1 16
2 20
3 21
4 48
5 27
6 28
7 24
8 25
9 32
10 60
11 55
12 39
13 40
14 32
15 44
16 45
17 112
18 65
19 36
20 84
21 84
22 52
23 72
24 35
25 91
26 57
27 36
28 96
29 36
30 140
31 44
32 63
33 64
34 45
35 123
36 40
37 68
38 108
39 48
40 85
41 120
42 75
43 172
44 96
45 80
46 136
47 132
48 56
49 95
50 48
51 240
52 49
53 88
54 48
55 141
56 92
57 108
58 93
59 50
60 196
61 52
62 172

List of values

[16, 20, 21, 48, 27, 28, 24, 25, 32, 60, 55, 39, 40, 32, 44, 45, 112, 65, 36, 84, 84, 52, 72, 35, 91, 57, 36, 96, 36, 140, 44, 63, 64, 45, 123, 40, 68, 108, 48, 85, 120, 75, 172, 96, 80, 136, 132, 56, 95, 48, 240, 49, 88, 48, 141, 92, 108, 93, 50, 196, 52, 172]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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