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.

A281141 Least number b > 2 such that n*b^n - 1 is a prime number or 0 if no such b exists.

Table of values

n a(n)
1 3
2 3
3 4
4 0
5 4
6 3
7 8
8 4
9 40
10 3
11 10
12 8
13 56
14 4
15 10
16 0
17 46
18 3
19 6
20 6
21 42
22 51
23 4
24 6
25 8
26 67
27 0
28 18
29 102
30 18
31 98
32 34
33 38
34 6
35 136
36 0
37 90
38 17
39 10
40 3
41 52
42 5
43 12
44 8
45 18
46 3
47 28
48 132
49 72
50 165
51 40
52 657
53 418
54 101
55 44
56 205
57 94
58 9
59 426
60 10
61 482
62 36
63 4
64 0
65 418
66 252
67 38
68 7

List of values

[3, 3, 4, 0, 4, 3, 8, 4, 40, 3, 10, 8, 56, 4, 10, 0, 46, 3, 6, 6, 42, 51, 4, 6, 8, 67, 0, 18, 102, 18, 98, 34, 38, 6, 136, 0, 90, 17, 10, 3, 52, 5, 12, 8, 18, 3, 28, 132, 72, 165, 40, 657, 418, 101, 44, 205, 94, 9, 426, 10, 482, 36, 4, 0, 418, 252, 38, 7]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.