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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.

A023258 Primes that remain prime through 2 iterations of function f(x) = 6x + 7.

Table of values

n a(n)
1 5
2 17
3 29
4 37
5 89
6 127
7 199
8 229
9 269
10 347
11 359
12 379
13 397
14 499
15 769
16 809
17 929
18 947
19 977
20 1049
21 1087
22 1129
23 1277
24 1279
25 1367
26 1409
27 1439
28 1489
29 1499
30 1607
31 1609
32 1787
33 2017
34 2039
35 2089
36 2399
37 2539
38 2707
39 2819
40 2837
41 2957
42 3089
43 3109
44 3217
45 3229
46 3389
47 3499

List of values

[5, 17, 29, 37, 89, 127, 199, 229, 269, 347, 359, 379, 397, 499, 769, 809, 929, 947, 977, 1049, 1087, 1129, 1277, 1279, 1367, 1409, 1439, 1489, 1499, 1607, 1609, 1787, 2017, 2039, 2089, 2399, 2539, 2707, 2819, 2837, 2957, 3089, 3109, 3217, 3229, 3389, 3499]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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