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.

A032617 Numbers k such that k concatenated with k+2 is a prime.

Table of values

n a(n)
1 1
2 7
3 9
4 27
5 37
6 45
7 49
8 51
9 55
10 61
11 69
12 75
13 105
14 109
15 115
16 117
17 121
18 151
19 159
20 181
21 187
22 195
23 201
24 211
25 217
26 225
27 247
28 271
29 277
30 285
31 289
32 291
33 301
34 309
35 319
36 321
37 331
38 337
39 339
40 357
41 361
42 367
43 381
44 391
45 399
46 405
47 417
48 421
49 427
50 429
51 435
52 439

List of values

[1, 7, 9, 27, 37, 45, 49, 51, 55, 61, 69, 75, 105, 109, 115, 117, 121, 151, 159, 181, 187, 195, 201, 211, 217, 225, 247, 271, 277, 285, 289, 291, 301, 309, 319, 321, 331, 337, 339, 357, 361, 367, 381, 391, 399, 405, 417, 421, 427, 429, 435, 439]