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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.

A197225 Primes p with the period of the decimal fraction 1/p a prime power, A000961.

Table of values

n a(n)
1 3
2 11
3 17
4 37
5 41
6 53
7 73
8 79
9 83
10 101
11 107
12 137
13 163
14 173
15 227
16 239
17 257
18 271
19 317
20 347
21 353
22 359
23 449
24 467
25 479
26 563
27 587
28 641
29 643
30 719
31 733
32 751
33 757
34 773
35 797
36 839
37 907
38 1031
39 1187
40 1231
41 1283
42 1307
43 1319
44 1409
45 1439
46 1493
47 1523
48 1627
49 1637
50 1879
51 1907

List of values

[3, 11, 17, 37, 41, 53, 73, 79, 83, 101, 107, 137, 163, 173, 227, 239, 257, 271, 317, 347, 353, 359, 449, 467, 479, 563, 587, 641, 643, 719, 733, 751, 757, 773, 797, 839, 907, 1031, 1187, 1231, 1283, 1307, 1319, 1409, 1439, 1493, 1523, 1627, 1637, 1879, 1907]