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.

A260119 a(n) is the least positive integer k such that 2^n-1 and k^n-1 are relatively prime.

Table of values

n a(n)
1 1
2 3
3 3
4 15
5 3
6 21
7 3
8 45
9 3
10 99
11 5
12 1365
13 3
14 3
15 3
16 765
17 3
18 399
19 3
20 1815
21 3
22 69
23 5
24 1365
25 3
26 3
27 3
28 435
29 3
30 35805
31 3
32 765
33 5
34 3
35 7
36 2878785
37 3
38 3
39 3
40 20295
41 3
42 903
43 5
44 1035
45 3
46 141
47 3
48 116025
49 3
50 99
51 3
52 795
53 3
54 399
55 5
56 435
57 3
58 177
59 3
60 85180095
61 3
62 3
63 3
64 765
65 3
66 32361
67 3
68 45
69 5
70 11715
71 3

List of values

[1, 3, 3, 15, 3, 21, 3, 45, 3, 99, 5, 1365, 3, 3, 3, 765, 3, 399, 3, 1815, 3, 69, 5, 1365, 3, 3, 3, 435, 3, 35805, 3, 765, 5, 3, 7, 2878785, 3, 3, 3, 20295, 3, 903, 5, 1035, 3, 141, 3, 116025, 3, 99, 3, 795, 3, 399, 5, 435, 3, 177, 3, 85180095, 3, 3, 3, 765, 3, 32361, 3, 45, 5, 11715, 3]