cp's OEIS Frontend

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.

A216437 Primes which do not divide any Repunit R(10^n) = (10^(10^n)-1)/9.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 13
6 19
7 23
8 29
9 31
10 37
11 43
12 47
13 53
14 59
15 61
16 67
17 71
18 79
19 83
20 89
21 97
22 103
23 107
24 109
25 113
26 127
27 131
28 139
29 149
30 151
31 157
32 163
33 167
34 173
35 179
36 181
37 191
38 193
39 197
40 199
41 211
42 223
43 227
44 229
45 233
46 239
47 241
48 263
49 269
50 277
51 281
52 283
53 293
54 307
55 311
56 313
57 317
58 331

List of values

[2, 3, 5, 7, 13, 19, 23, 29, 31, 37, 43, 47, 53, 59, 61, 67, 71, 79, 83, 89, 97, 103, 107, 109, 113, 127, 131, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 263, 269, 277, 281, 283, 293, 307, 311, 313, 317, 331]