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.

A134533 Numbers n such that the sum of the digits of 7^n is prime.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 10
6 12
7 18
8 19
9 22
10 24
11 25
12 32
13 33
14 35
15 45
16 56
17 57
18 58
19 59
20 60
21 72
22 73
23 76
24 81
25 82
26 84
27 88
28 100
29 102
30 103
31 104
32 105
33 117
34 118
35 125
36 136
37 138
38 142
39 147
40 149
41 162
42 188
43 190
44 192
45 195
46 201
47 203
48 206
49 210
50 212
51 232
52 240
53 246
54 252
55 262
56 264
57 265
58 269
59 270
60 280

List of values

[1, 2, 4, 8, 10, 12, 18, 19, 22, 24, 25, 32, 33, 35, 45, 56, 57, 58, 59, 60, 72, 73, 76, 81, 82, 84, 88, 100, 102, 103, 104, 105, 117, 118, 125, 136, 138, 142, 147, 149, 162, 188, 190, 192, 195, 201, 203, 206, 210, 212, 232, 240, 246, 252, 262, 264, 265, 269, 270, 280]