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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.

A289250 Primes p such that p + 4 is a semiprime.

Table of values

n a(n)
1 2
2 5
3 11
4 17
5 29
6 31
7 47
8 53
9 61
10 73
11 83
12 89
13 107
14 137
15 139
16 151
17 157
18 173
19 179
20 181
21 197
22 199
23 211
24 233
25 263
26 283
27 317
28 331
29 337
30 367
31 373
32 389
33 409
34 433
35 443
36 449
37 467
38 523
39 541
40 547
41 569
42 577
43 587
44 593
45 607
46 619
47 631
48 677
49 683
50 691
51 709
52 719
53 727
54 733
55 751
56 787
57 809
58 811
59 827

List of values

[2, 5, 11, 17, 29, 31, 47, 53, 61, 73, 83, 89, 107, 137, 139, 151, 157, 173, 179, 181, 197, 199, 211, 233, 263, 283, 317, 331, 337, 367, 373, 389, 409, 433, 443, 449, 467, 523, 541, 547, 569, 577, 587, 593, 607, 619, 631, 677, 683, 691, 709, 719, 727, 733, 751, 787, 809, 811, 827]

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