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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.

A225185 Primes p which do not have a primitive root that divides p+1.

Table of values

n a(n)
1 7
2 23
3 31
4 43
5 47
6 71
7 73
8 79
9 103
10 127
11 151
12 157
13 167
14 191
15 193
16 199
17 223
18 239
19 241
20 263
21 271
22 277
23 283
24 311
25 313
26 331
27 337
28 359
29 367
30 383
31 397
32 409
33 431
34 439
35 457
36 463
37 479
38 487
39 503
40 571
41 577
42 599
43 607
44 631
45 647
46 673
47 691
48 719
49 727
50 733
51 739
52 743
53 751
54 811
55 823
56 839
57 863
58 887
59 911
60 919
61 967
62 983
63 991
64 997

List of values

[7, 23, 31, 43, 47, 71, 73, 79, 103, 127, 151, 157, 167, 191, 193, 199, 223, 239, 241, 263, 271, 277, 283, 311, 313, 331, 337, 359, 367, 383, 397, 409, 431, 439, 457, 463, 479, 487, 503, 571, 577, 599, 607, 631, 647, 673, 691, 719, 727, 733, 739, 743, 751, 811, 823, 839, 863, 887, 911, 919, 967, 983, 991, 997]

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

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