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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.

A087155 Primes having nontrivial palindromic representation in some (at least one) base.

Table of values

n a(n)
1 5
2 7
3 13
4 17
5 23
6 29
7 31
8 37
9 41
10 43
11 59
12 61
13 67
14 71
15 73
16 83
17 89
18 97
19 101
20 107
21 109
22 113
23 127
24 131
25 151
26 157
27 173
28 181
29 191
30 193
31 197
32 199
33 211
34 227
35 229
36 233
37 239
38 241
39 251
40 257
41 271
42 277
43 281
44 307
45 313
46 331
47 337
48 349
49 353
50 373
51 379
52 383
53 397
54 401
55 409
56 419

List of values

[5, 7, 13, 17, 23, 29, 31, 37, 41, 43, 59, 61, 67, 71, 73, 83, 89, 97, 101, 107, 109, 113, 127, 131, 151, 157, 173, 181, 191, 193, 197, 199, 211, 227, 229, 233, 239, 241, 251, 257, 271, 277, 281, 307, 313, 331, 337, 349, 353, 373, 379, 383, 397, 401, 409, 419]