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.

A015761 Numbers k such that phi(k) | sigma_3(k).

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 12
6 14
7 15
8 30
9 35
10 38
11 42
12 54
13 56
14 70
15 78
16 87
17 95
18 105
19 114
20 126
21 135
22 140
23 147
24 168
25 174
26 182
27 190
28 209
29 210
30 215
31 216
32 222
33 248
34 258
35 264
36 270
37 285
38 294
39 297
40 315
41 357
42 418
43 420
44 430
45 455
46 456
47 540
48 546
49 551
50 570
51 594
52 609
53 616
54 627

List of values

[1, 2, 3, 6, 12, 14, 15, 30, 35, 38, 42, 54, 56, 70, 78, 87, 95, 105, 114, 126, 135, 140, 147, 168, 174, 182, 190, 209, 210, 215, 216, 222, 248, 258, 264, 270, 285, 294, 297, 315, 357, 418, 420, 430, 455, 456, 540, 546, 551, 570, 594, 609, 616, 627]