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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.

A229289 Primes p of the form p = 2^k * m + 1, where (i) m is squarefree and odd, (ii) all primes that divide m are in the sequence, and (iii) k is 0, 1, or 2.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 11
6 13
7 23
8 29
9 31
10 43
11 47
12 53
13 59
14 61
15 67
16 71
17 79
18 107
19 131
20 139
21 157
22 173
23 211
24 263
25 269
26 277
27 283
28 311
29 317
30 331
31 347
32 349
33 367
34 373
35 421
36 431
37 461
38 463
39 547
40 557
41 599
42 643
43 659
44 661
45 683
46 691
47 709
48 733
49 743
50 787
51 827
52 853
53 859
54 863
55 911
56 941

List of values

[2, 3, 5, 7, 11, 13, 23, 29, 31, 43, 47, 53, 59, 61, 67, 71, 79, 107, 131, 139, 157, 173, 211, 263, 269, 277, 283, 311, 317, 331, 347, 349, 367, 373, 421, 431, 461, 463, 547, 557, 599, 643, 659, 661, 683, 691, 709, 733, 743, 787, 827, 853, 859, 863, 911, 941]

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

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