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.

A015860 Numbers k such that phi(k) | sigma(k + 13).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 7
6 8
7 9
8 10
9 11
10 15
11 20
12 25
13 27
14 34
15 38
16 41
17 42
18 44
19 56
20 57
21 64
22 66
23 80
24 82
25 120
26 122
27 128
28 146
29 152
30 155
31 164
32 176
33 204
34 222
35 237
36 310
37 330
38 331
39 342
40 377
41 378
42 400
43 427
44 460
45 465
46 490
47 500
48 504
49 560
50 602
51 610
52 626
53 704
54 722
55 770
56 817
57 861

List of values

[1, 2, 4, 6, 7, 8, 9, 10, 11, 15, 20, 25, 27, 34, 38, 41, 42, 44, 56, 57, 64, 66, 80, 82, 120, 122, 128, 146, 152, 155, 164, 176, 204, 222, 237, 310, 330, 331, 342, 377, 378, 400, 427, 460, 465, 490, 500, 504, 560, 602, 610, 626, 704, 722, 770, 817, 861]