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.

A050719 Inserting a digit '9' between adjacent digits of n makes a prime.

Table of values

n a(n)
1 11
2 13
3 17
4 19
5 23
6 37
7 41
8 49
9 53
10 59
11 61
12 77
13 91
14 97
15 131
16 157
17 167
18 169
19 173
20 181
21 191
22 193
23 197
24 211
25 227
26 239
27 259
28 307
29 311
30 319
31 323
32 337
33 349
34 371
35 379
36 413
37 419
38 427
39 431
40 433
41 449
42 457
43 467
44 481
45 491
46 493
47 499
48 503
49 517
50 533
51 539
52 547
53 563
54 569
55 571

List of values

[11, 13, 17, 19, 23, 37, 41, 49, 53, 59, 61, 77, 91, 97, 131, 157, 167, 169, 173, 181, 191, 193, 197, 211, 227, 239, 259, 307, 311, 319, 323, 337, 349, 371, 379, 413, 419, 427, 431, 433, 449, 457, 467, 481, 491, 493, 499, 503, 517, 533, 539, 547, 563, 569, 571]