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.

A147570 a(n) = phi(A020492(n)).

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 4
6 6
7 8
8 8
9 24
10 12
11 24
12 24
13 24
14 48
15 48
16 48
17 72
18 48
19 120
20 80
21 72
22 192
23 180
24 96
25 144
26 180
27 240
28 144
29 192
30 240
31 336
32 192
33 288
34 720
35 480
36 360
37 720
38 720
39 480
40 720
41 720
42 720
43 672
44 672
45 576
46 720
47 960
48 1440
49 1872
50 1680
51 960
52 1120
53 1848
54 2016
55 1440
56 1728
57 1440

List of values

[1, 1, 2, 2, 4, 6, 8, 8, 24, 12, 24, 24, 24, 48, 48, 48, 72, 48, 120, 80, 72, 192, 180, 96, 144, 180, 240, 144, 192, 240, 336, 192, 288, 720, 480, 360, 720, 720, 480, 720, 720, 720, 672, 672, 576, 720, 960, 1440, 1872, 1680, 960, 1120, 1848, 2016, 1440, 1728, 1440]