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.

A383488 Numbers k that have at least one divisor d_i(k) for which a divisor d_j(k) exists such that d_i(k) < d_j(k) < sigma(d_i(k)).

Table of values

n a(n)
1 12
2 18
3 20
4 24
5 30
6 36
7 40
8 42
9 48
10 54
11 56
12 60
13 66
14 70
15 72
16 78
17 80
18 84
19 88
20 90
21 96
22 99
23 100
24 102
25 104
26 105
27 108
28 110
29 112
30 114
31 120
32 126
33 130
34 132
35 138
36 140
37 144
38 150
39 154
40 156
41 160
42 162
43 168
44 170
45 174
46 176
47 180
48 186
49 189
50 192
51 196
52 198
53 200
54 204
55 208
56 210
57 216

List of values

[12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 99, 100, 102, 104, 105, 108, 110, 112, 114, 120, 126, 130, 132, 138, 140, 144, 150, 154, 156, 160, 162, 168, 170, 174, 176, 180, 186, 189, 192, 196, 198, 200, 204, 208, 210, 216]

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

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