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.

A050713 Inserting a digit '3' between adjacent digits of n makes a prime.

Table of values

n a(n)
1 11
2 17
3 19
4 23
5 29
6 31
7 37
8 41
9 43
10 49
11 61
12 73
13 79
14 89
15 97
16 103
17 107
18 131
19 137
20 139
21 157
22 163
23 181
24 191
25 193
26 209
27 211
28 233
29 239
30 241
31 251
32 257
33 259
34 263
35 281
36 283
37 307
38 331
39 353
40 367
41 379
42 391
43 397
44 407
45 413
46 427
47 431
48 463
49 493
50 521
51 523
52 529
53 547
54 563
55 569

List of values

[11, 17, 19, 23, 29, 31, 37, 41, 43, 49, 61, 73, 79, 89, 97, 103, 107, 131, 137, 139, 157, 163, 181, 191, 193, 209, 211, 233, 239, 241, 251, 257, 259, 263, 281, 283, 307, 331, 353, 367, 379, 391, 397, 407, 413, 427, 431, 463, 493, 521, 523, 529, 547, 563, 569]