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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.

A065528 Numbers n such that phi(n) is a nontrivial power b^c where b > 1 and c > 1.

Table of values

n a(n)
1 5
2 8
3 10
4 12
5 15
6 16
7 17
8 20
9 24
10 30
11 32
12 34
13 37
14 40
15 48
16 51
17 57
18 60
19 63
20 64
21 68
22 74
23 76
24 80
25 85
26 96
27 101
28 102
29 108
30 114
31 120
32 125
33 126
34 128
35 136
36 160
37 170
38 185
39 192
40 197
41 202
42 204
43 219
44 240
45 247
46 250
47 255
48 256
49 257
50 259
51 272
52 273
53 285
54 292
55 296
56 304
57 315
58 320
59 327
60 333

List of values

[5, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 37, 40, 48, 51, 57, 60, 63, 64, 68, 74, 76, 80, 85, 96, 101, 102, 108, 114, 120, 125, 126, 128, 136, 160, 170, 185, 192, 197, 202, 204, 219, 240, 247, 250, 255, 256, 257, 259, 272, 273, 285, 292, 296, 304, 315, 320, 327, 333]

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

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