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.

A271801 Smallest composite k such that k divides (n^(k-1)-1)/(n-1), n > 1.

Table of values

n a(n)
2 341
3 91
4 85
5 217
6 217
7 25
8 9
9 91
10 91
11 133
12 65
13 85
14 15
15 341
16 91
17 9
18 25
19 49
20 21
21 221
22 169
23 91
24 25
25 91
26 9
27 121
28 145
29 15
30 49
31 49
32 25
33 85
34 35
35 9
36 403
37 133
38 39
39 341
40 121
41 21
42 529
43 25
44 9
45 133
46 133
47 65
48 49
49 25
50 51
51 91
52 265
53 9
54 55
55 91
56 57
57 25
58 341
59 15
60 341
61 91
62 9
63 481
64 65
65 33
66 469
67 49
68 25
69 35
70 169
71 9
72 85
73 65

List of values

[341, 91, 85, 217, 217, 25, 9, 91, 91, 133, 65, 85, 15, 341, 91, 9, 25, 49, 21, 221, 169, 91, 25, 91, 9, 121, 145, 15, 49, 49, 25, 85, 35, 9, 403, 133, 39, 341, 121, 21, 529, 25, 9, 133, 133, 65, 49, 25, 51, 91, 265, 9, 55, 91, 57, 25, 341, 15, 341, 91, 9, 481, 65, 33, 469, 49, 25, 35, 169, 9, 85, 65]