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.

A049149 Numbers k such that the Euler totient function phi(k) is squarefree.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 7
7 9
8 11
9 14
10 18
11 22
12 23
13 31
14 43
15 46
16 47
17 49
18 59
19 62
20 67
21 71
22 79
23 83
24 86
25 94
26 98
27 103
28 107
29 118
30 121
31 131
32 134
33 139
34 142
35 158
36 166
37 167
38 179
39 191
40 206
41 211
42 214
43 223
44 227
45 239
46 242
47 262
48 263
49 278
50 283
51 311
52 331
53 334
54 347
55 358
56 359
57 367
58 382
59 383

List of values

[1, 2, 3, 4, 6, 7, 9, 11, 14, 18, 22, 23, 31, 43, 46, 47, 49, 59, 62, 67, 71, 79, 83, 86, 94, 98, 103, 107, 118, 121, 131, 134, 139, 142, 158, 166, 167, 179, 191, 206, 211, 214, 223, 227, 239, 242, 262, 263, 278, 283, 311, 331, 334, 347, 358, 359, 367, 382, 383]