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.

A260120 Least integer k > 0 such that (prime(k*n)-1)^2 = prime(j*n)-1 for some j > 0.

Table of values

n a(n)
1 1
2 2
3 14
4 1
5 12
6 9
7 30
8 198
9 69
10 83
11 66
12 132
13 44
14 15
15 4
16 99
17 71
18 88
19 339
20 230
21 10
22 33
23 167
24 66
25 42
26 22
27 126
28 442
29 318
30 1185
31 29
32 289
33 37
34 174
35 157
36 44
37 146
38 301
39 171
40 403
41 2
42 5
43 26
44 699
45 573
46 144
47 338
48 33
49 2032
50 1212
51 404
52 11
53 135
54 267
55 380
56 221
57 447
58 159
59 898
60 1397

List of values

[1, 2, 14, 1, 12, 9, 30, 198, 69, 83, 66, 132, 44, 15, 4, 99, 71, 88, 339, 230, 10, 33, 167, 66, 42, 22, 126, 442, 318, 1185, 29, 289, 37, 174, 157, 44, 146, 301, 171, 403, 2, 5, 26, 699, 573, 144, 338, 33, 2032, 1212, 404, 11, 135, 267, 380, 221, 447, 159, 898, 1397]