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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.

A250178 Numbers k such that Phi_22(k) is prime, where Phi is the cyclotomic polynomial.

Table of values

n a(n)
1 2
2 6
3 12
4 13
5 23
6 24
7 26
8 35
9 62
10 69
11 91
12 105
13 147
14 160
15 163
16 183
17 185
18 193
19 229
20 232
21 233
22 236
23 248
24 262
25 269
26 280
27 294
28 303
29 315
30 330
31 376
32 394
33 426
34 430
35 440
36 464
37 469
38 491
39 492
40 508
41 537
42 625
43 629
44 647
45 653
46 666
47 752
48 772
49 775
50 786
51 788
52 832
53 840
54 852
55 854
56 855
57 859
58 905
59 922
60 972
61 993
62 998

List of values

[2, 6, 12, 13, 23, 24, 26, 35, 62, 69, 91, 105, 147, 160, 163, 183, 185, 193, 229, 232, 233, 236, 248, 262, 269, 280, 294, 303, 315, 330, 376, 394, 426, 430, 440, 464, 469, 491, 492, 508, 537, 625, 629, 647, 653, 666, 752, 772, 775, 786, 788, 832, 840, 852, 854, 855, 859, 905, 922, 972, 993, 998]

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

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