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.

A225223 Primes of the form p - 1, where p is a practical number (A005153).

Table of values

n a(n)
1 3
2 5
3 7
4 11
5 17
6 19
7 23
8 29
9 31
10 41
11 47
12 53
13 59
14 71
15 79
16 83
17 89
18 103
19 107
20 127
21 131
22 139
23 149
24 167
25 179
26 191
27 197
28 199
29 223
30 227
31 233
32 239
33 251
34 263
35 269
36 271
37 293
38 307
39 311
40 347
41 359
42 367
43 379
44 383
45 389
46 419
47 431
48 439
49 449
50 461
51 463
52 467
53 479
54 499
55 503
56 509

List of values

[3, 5, 7, 11, 17, 19, 23, 29, 31, 41, 47, 53, 59, 71, 79, 83, 89, 103, 107, 127, 131, 139, 149, 167, 179, 191, 197, 199, 223, 227, 233, 239, 251, 263, 269, 271, 293, 307, 311, 347, 359, 367, 379, 383, 389, 419, 431, 439, 449, 461, 463, 467, 479, 499, 503, 509]