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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.

A293928 Totients phi(m) having one or more solutions m to phi(m)^2 = phi(phi(m)*m).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 12
7 16
8 18
9 20
10 24
11 32
12 36
13 40
14 48
15 54
16 64
17 72
18 80
19 84
20 96
21 100
22 108
23 120
24 128
25 144
26 160
27 162
28 168
29 192
30 200
31 216
32 240
33 252
34 256
35 272
36 288
37 312
38 320
39 324
40 336
41 360
42 384
43 400
44 432
45 440
46 480
47 486
48 500
49 504
50 512
51 544
52 576
53 588
54 600
55 624
56 640
57 648
58 672
59 684

List of values

[1, 2, 4, 6, 8, 12, 16, 18, 20, 24, 32, 36, 40, 48, 54, 64, 72, 80, 84, 96, 100, 108, 120, 128, 144, 160, 162, 168, 192, 200, 216, 240, 252, 256, 272, 288, 312, 320, 324, 336, 360, 384, 400, 432, 440, 480, 486, 500, 504, 512, 544, 576, 588, 600, 624, 640, 648, 672, 684]

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

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