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.

A039770 Numbers k such that phi(k) is a perfect square.

Table of values

n a(n)
1 1
2 2
3 5
4 8
5 10
6 12
7 17
8 32
9 34
10 37
11 40
12 48
13 57
14 60
15 63
16 74
17 76
18 85
19 101
20 108
21 114
22 125
23 126
24 128
25 136
26 160
27 170
28 185
29 192
30 197
31 202
32 204
33 219
34 240
35 250
36 257
37 273
38 285
39 292
40 296
41 304
42 315
43 364
44 370
45 380
46 394
47 401
48 432
49 438
50 444
51 451
52 456
53 468
54 489
55 504
56 505

List of values

[1, 2, 5, 8, 10, 12, 17, 32, 34, 37, 40, 48, 57, 60, 63, 74, 76, 85, 101, 108, 114, 125, 126, 128, 136, 160, 170, 185, 192, 197, 202, 204, 219, 240, 250, 257, 273, 285, 292, 296, 304, 315, 364, 370, 380, 394, 401, 432, 438, 444, 451, 456, 468, 489, 504, 505]