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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.

A246397 Numbers n such that Phi(12, n) is prime, where Phi is the cyclotomic polynomial.

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 9
6 10
7 12
8 13
9 17
10 25
11 27
12 30
13 31
14 36
15 38
16 39
17 43
18 48
19 52
20 55
21 56
22 61
23 62
24 65
25 83
26 92
27 94
28 99
29 100
30 104
31 105
32 109
33 114
34 118
35 126
36 131
37 166
38 168
39 169
40 172
41 183
42 185
43 190
44 194
45 196
46 198
47 209
48 224
49 225
50 229
51 231
52 239
53 244
54 257
55 260
56 261
57 263
58 269
59 270
60 272
61 278
62 291
63 296
64 299
65 300
66 302
67 308
68 311

List of values

[2, 3, 4, 5, 9, 10, 12, 13, 17, 25, 27, 30, 31, 36, 38, 39, 43, 48, 52, 55, 56, 61, 62, 65, 83, 92, 94, 99, 100, 104, 105, 109, 114, 118, 126, 131, 166, 168, 169, 172, 183, 185, 190, 194, 196, 198, 209, 224, 225, 229, 231, 239, 244, 257, 260, 261, 263, 269, 270, 272, 278, 291, 296, 299, 300, 302, 308, 311]

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

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