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.

A052213 Numbers k with prime signature(k) = prime signature(k+1).

Table of values

n a(n)
1 2
2 14
3 21
4 33
5 34
6 38
7 44
8 57
9 75
10 85
11 86
12 93
13 94
14 98
15 116
16 118
17 122
18 133
19 135
20 141
21 142
22 145
23 147
24 158
25 171
26 177
27 201
28 202
29 205
30 213
31 214
32 217
33 218
34 230
35 244
36 253
37 285
38 296
39 298
40 301
41 302
42 326
43 332
44 334
45 375
46 381
47 387
48 393
49 394
50 429
51 434
52 445
53 446
54 453
55 481

List of values

[2, 14, 21, 33, 34, 38, 44, 57, 75, 85, 86, 93, 94, 98, 116, 118, 122, 133, 135, 141, 142, 145, 147, 158, 171, 177, 201, 202, 205, 213, 214, 217, 218, 230, 244, 253, 285, 296, 298, 301, 302, 326, 332, 334, 375, 381, 387, 393, 394, 429, 434, 445, 446, 453, 481]