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.

A007366 Numbers k such that phi(x) = k has exactly 2 solutions.

Table of values

n a(n)
1 1
2 10
3 22
4 28
5 30
6 46
7 52
8 54
9 58
10 66
11 70
12 78
13 82
14 102
15 106
16 110
17 126
18 130
19 136
20 138
21 148
22 150
23 166
24 172
25 178
26 190
27 196
28 198
29 210
30 222
31 226
32 228
33 238
34 250
35 262
36 268
37 270
38 282
39 292
40 294
41 306
42 310
43 316
44 330
45 342
46 346
47 358
48 366
49 372
50 378
51 382
52 388
53 418
54 430
55 438

List of values

[1, 10, 22, 28, 30, 46, 52, 54, 58, 66, 70, 78, 82, 102, 106, 110, 126, 130, 136, 138, 148, 150, 166, 172, 178, 190, 196, 198, 210, 222, 226, 228, 238, 250, 262, 268, 270, 282, 292, 294, 306, 310, 316, 330, 342, 346, 358, 366, 372, 378, 382, 388, 418, 430, 438]