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.

A071562 Numbers n such that the sum of the middle divisors of n (A071090) is not zero.

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 9
7 12
8 15
9 16
10 18
11 20
12 24
13 25
14 28
15 30
16 32
17 35
18 36
19 40
20 42
21 45
22 48
23 49
24 50
25 54
26 56
27 60
28 63
29 64
30 66
31 70
32 72
33 77
34 80
35 81
36 84
37 88
38 90
39 91
40 96
41 98
42 99
43 100
44 104
45 108
46 110
47 112
48 117
49 120
50 121
51 126
52 128
53 130
54 132
55 135
56 140
57 143
58 144
59 150
60 153
61 154
62 156
63 160

List of values

[1, 2, 4, 6, 8, 9, 12, 15, 16, 18, 20, 24, 25, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 50, 54, 56, 60, 63, 64, 66, 70, 72, 77, 80, 81, 84, 88, 90, 91, 96, 98, 99, 100, 104, 108, 110, 112, 117, 120, 121, 126, 128, 130, 132, 135, 140, 143, 144, 150, 153, 154, 156, 160]

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

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