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.

A320142 Numbers that have exactly two middle divisors.

Table of values

n a(n)
1 6
2 12
3 15
4 20
5 24
6 28
7 30
8 35
9 40
10 42
11 45
12 48
13 54
14 56
15 60
16 63
17 66
18 70
19 77
20 80
21 84
22 88
23 90
24 91
25 96
26 99
27 104
28 108
29 110
30 112
31 117
32 126
33 130
34 132
35 135
36 140
37 143
38 150
39 153
40 154
41 156
42 160
43 165
44 168
45 170
46 176
47 182
48 187
49 190
50 192
51 195
52 198
53 204
54 208
55 209
56 210
57 216
58 220
59 221
60 224
61 228
62 231
63 234
64 238
65 247
66 255
67 260

List of values

[6, 12, 15, 20, 24, 28, 30, 35, 40, 42, 45, 48, 54, 56, 60, 63, 66, 70, 77, 80, 84, 88, 90, 91, 96, 99, 104, 108, 110, 112, 117, 126, 130, 132, 135, 140, 143, 150, 153, 154, 156, 160, 165, 168, 170, 176, 182, 187, 190, 192, 195, 198, 204, 208, 209, 210, 216, 220, 221, 224, 228, 231, 234, 238, 247, 255, 260]

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

Content is available under The OEIS End-User License Agreement.