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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.

A219277 Numbers n such that ChebyshevT[8,n] is prime.

Table of values

n a(n)
1 3
2 4
3 7
4 15
5 18
6 19
7 37
8 43
9 46
10 47
11 62
12 74
13 75
14 84
15 89
16 90
17 92
18 96
19 105
20 112
21 130
22 139
23 158
24 163
25 182
26 189
27 190
28 202
29 213
30 217
31 218
32 225
33 233
34 255
35 256
36 271
37 280
38 288
39 293
40 301
41 314
42 317
43 329
44 335
45 337
46 349
47 350
48 354
49 360
50 364
51 365
52 368
53 376
54 396
55 416
56 422

List of values

[3, 4, 7, 15, 18, 19, 37, 43, 46, 47, 62, 74, 75, 84, 89, 90, 92, 96, 105, 112, 130, 139, 158, 163, 182, 189, 190, 202, 213, 217, 218, 225, 233, 255, 256, 271, 280, 288, 293, 301, 314, 317, 329, 335, 337, 349, 350, 354, 360, 364, 365, 368, 376, 396, 416, 422]