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.

A201457 Least k such that (7^n + k)*7^n - 1 is a prime number.

Table of values

n a(n)
1 5
2 11
3 1
4 11
5 23
6 29
7 17
8 31
9 13
10 37
11 61
12 11
13 35
14 149
15 17
16 151
17 17
18 17
19 17
20 13
21 59
22 17
23 73
24 47
25 43
26 13
27 113
28 77
29 119
30 97
31 125
32 83
33 13
34 421
35 103
36 103
37 77
38 23
39 23
40 79
41 5
42 107
43 7
44 37
45 59
46 113
47 11
48 1
49 169
50 887
51 137
52 41
53 113
54 71
55 277
56 413
57 97
58 91
59 227
60 337
61 97
62 353
63 233
64 953
65 5
66 139
67 77
68 473
69 73
70 167
71 275
72 67
73 49
74 97
75 365
76 73
77 223
78 241
79 115

List of values

[5, 11, 1, 11, 23, 29, 17, 31, 13, 37, 61, 11, 35, 149, 17, 151, 17, 17, 17, 13, 59, 17, 73, 47, 43, 13, 113, 77, 119, 97, 125, 83, 13, 421, 103, 103, 77, 23, 23, 79, 5, 107, 7, 37, 59, 113, 11, 1, 169, 887, 137, 41, 113, 71, 277, 413, 97, 91, 227, 337, 97, 353, 233, 953, 5, 139, 77, 473, 73, 167, 275, 67, 49, 97, 365, 73, 223, 241, 115]