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.

A090778 Numbers k such that phi(k) divides k*(k - phi(k)).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 10
7 12
8 16
9 18
10 20
11 24
12 32
13 36
14 40
15 42
16 48
17 50
18 54
19 60
20 64
21 72
22 80
23 84
24 96
25 100
26 108
27 114
28 120
29 126
30 128
31 136
32 144
33 156
34 160
35 162
36 168
37 180
38 192
39 200
40 216
41 220
42 228
43 240
44 250
45 252
46 256
47 272
48 288
49 294
50 300
51 312
52 320
53 324
54 336
55 342
56 360
57 378
58 384
59 400

List of values

[1, 2, 4, 6, 8, 10, 12, 16, 18, 20, 24, 32, 36, 40, 42, 48, 50, 54, 60, 64, 72, 80, 84, 96, 100, 108, 114, 120, 126, 128, 136, 144, 156, 160, 162, 168, 180, 192, 200, 216, 220, 228, 240, 250, 252, 256, 272, 288, 294, 300, 312, 320, 324, 336, 342, 360, 378, 384, 400]