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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.

A179202 Numbers n such that phi(n) = phi(n+8), with Euler's totient function phi=A000010.

Table of values

n a(n)
1 13
2 16
3 19
4 25
5 28
6 32
7 40
8 70
9 104
10 128
11 175
12 182
13 209
14 280
15 296
16 488
17 551
18 584
19 657
20 715
21 806
22 910
23 1232
24 1256
25 1544
26 1602
27 2022
28 2048
29 2216
30 2288
31 2504
32 2540
33 2590
34 2717
35 2912
36 3176
37 3368
38 3640
39 3656
40 4060
41 4328
42 4904
43 5246
44 5288
45 5320
46 5384
47 5864
48 5969

List of values

[13, 16, 19, 25, 28, 32, 40, 70, 104, 128, 175, 182, 209, 280, 296, 488, 551, 584, 657, 715, 806, 910, 1232, 1256, 1544, 1602, 2022, 2048, 2216, 2288, 2504, 2540, 2590, 2717, 2912, 3176, 3368, 3640, 3656, 4060, 4328, 4904, 5246, 5288, 5320, 5384, 5864, 5969]