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.

A030457 Numbers k such that k concatenated with k+1 is prime.

Table of values

n a(n)
1 2
2 6
3 8
4 12
5 36
6 42
7 50
8 56
9 62
10 68
11 78
12 80
13 90
14 92
15 96
16 102
17 108
18 120
19 126
20 138
21 150
22 156
23 180
24 186
25 188
26 192
27 200
28 216
29 242
30 246
31 252
32 270
33 276
34 278
35 300
36 308
37 312
38 318
39 330
40 338
41 342
42 350
43 362
44 368
45 378
46 390
47 402
48 410
49 416
50 420
51 426
52 428
53 432

List of values

[2, 6, 8, 12, 36, 42, 50, 56, 62, 68, 78, 80, 90, 92, 96, 102, 108, 120, 126, 138, 150, 156, 180, 186, 188, 192, 200, 216, 242, 246, 252, 270, 276, 278, 300, 308, 312, 318, 330, 338, 342, 350, 362, 368, 378, 390, 402, 410, 416, 420, 426, 428, 432]