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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.

A053176 Primes p such that 2p+1 is composite.

Table of values

n a(n)
1 7
2 13
3 17
4 19
5 31
6 37
7 43
8 47
9 59
10 61
11 67
12 71
13 73
14 79
15 97
16 101
17 103
18 107
19 109
20 127
21 137
22 139
23 149
24 151
25 157
26 163
27 167
28 181
29 193
30 197
31 199
32 211
33 223
34 227
35 229
36 241
37 257
38 263
39 269
40 271
41 277
42 283
43 307
44 311
45 313
46 317
47 331
48 337
49 347
50 349
51 353
52 367
53 373
54 379
55 383

List of values

[7, 13, 17, 19, 31, 37, 43, 47, 59, 61, 67, 71, 73, 79, 97, 101, 103, 107, 109, 127, 137, 139, 149, 151, 157, 163, 167, 181, 193, 197, 199, 211, 223, 227, 229, 241, 257, 263, 269, 271, 277, 283, 307, 311, 313, 317, 331, 337, 347, 349, 353, 367, 373, 379, 383]