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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.

A094317 Primes n with property that sum of digits that are primes is prime.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 13
6 17
7 23
8 29
9 31
10 43
11 47
12 59
13 67
14 71
15 79
16 83
17 97
18 103
19 107
20 113
21 131
22 139
23 151
24 163
25 167
26 179
27 193
28 197
29 211
30 223
31 227
32 239
33 241
34 251
35 263
36 269
37 281
38 283
39 293
40 311
41 337
42 349
43 353
44 373
45 389
46 421
47 431
48 439
49 443
50 463
51 467
52 479
53 487
54 509

List of values

[2, 3, 5, 7, 13, 17, 23, 29, 31, 43, 47, 59, 67, 71, 79, 83, 97, 103, 107, 113, 131, 139, 151, 163, 167, 179, 193, 197, 211, 223, 227, 239, 241, 251, 263, 269, 281, 283, 293, 311, 337, 349, 353, 373, 389, 421, 431, 439, 443, 463, 467, 479, 487, 509]