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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.

A256396 Primes p such that p divides 3*2^k + 1 for some k >= 0.

Table of values

n a(n)
1 2
2 5
3 7
4 11
5 13
6 19
7 29
8 37
9 53
10 59
11 61
12 67
13 79
14 83
15 97
16 101
17 103
18 107
19 131
20 139
21 149
22 163
23 173
24 179
25 181
26 193
27 197
28 199
29 211
30 227
31 269
32 271
33 293
34 307
35 313
36 317
37 347
38 349
39 367
40 373
41 379
42 389
43 409
44 419
45 421
46 439
47 443
48 461
49 463
50 467
51 487
52 491
53 499
54 509
55 523
56 541
57 547
58 557
59 563
60 577
61 587

List of values

[2, 5, 7, 11, 13, 19, 29, 37, 53, 59, 61, 67, 79, 83, 97, 101, 103, 107, 131, 139, 149, 163, 173, 179, 181, 193, 197, 199, 211, 227, 269, 271, 293, 307, 313, 317, 347, 349, 367, 373, 379, 389, 409, 419, 421, 439, 443, 461, 463, 467, 487, 491, 499, 509, 523, 541, 547, 557, 563, 577, 587]