cp's OEIS Frontend

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.

A069690 Primes that yield another prime on placing a 9 on both sides (as leading and trailing digits).

Table of values

n a(n)
1 2
2 19
3 23
4 31
5 41
6 43
7 47
8 53
9 61
10 67
11 71
12 73
13 83
14 101
15 107
16 109
17 113
18 149
19 163
20 193
21 211
22 239
23 241
24 263
25 269
26 277
27 313
28 317
29 331
30 347
31 373
32 397
33 409
34 421
35 439
36 443
37 499
38 521
39 523
40 541
41 547
42 607
43 617
44 619
45 641
46 647
47 673
48 677
49 757
50 787
51 829
52 863
53 877
54 907
55 911

List of values

[2, 19, 23, 31, 41, 43, 47, 53, 61, 67, 71, 73, 83, 101, 107, 109, 113, 149, 163, 193, 211, 239, 241, 263, 269, 277, 313, 317, 331, 347, 373, 397, 409, 421, 439, 443, 499, 521, 523, 541, 547, 607, 617, 619, 641, 647, 673, 677, 757, 787, 829, 863, 877, 907, 911]