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.

A068678 Numbers that yield a prime when a 9 is prefixed or suffixed to them.

Table of values

n a(n)
1 7
2 19
3 37
4 41
5 47
6 71
7 83
8 91
9 103
10 127
11 157
12 161
13 187
14 199
15 203
16 209
17 239
18 257
19 281
20 293
21 311
22 349
23 371
24 377
25 391
26 413
27 421
28 433
29 463
30 467
31 479
32 491
33 511
34 539
35 547
36 551
37 587
38 619
39 629
40 661
41 677
42 689
43 721
44 749
45 769
46 787
47 791
48 803
49 817
50 859
51 871
52 883
53 923

List of values

[7, 19, 37, 41, 47, 71, 83, 91, 103, 127, 157, 161, 187, 199, 203, 209, 239, 257, 281, 293, 311, 349, 371, 377, 391, 413, 421, 433, 463, 467, 479, 491, 511, 539, 547, 551, 587, 619, 629, 661, 677, 689, 721, 749, 769, 787, 791, 803, 817, 859, 871, 883, 923]