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.

A332792 a(1) = 1; a(n) = Sum_{d|n, d < n} phi(d) * a(d).

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 1
6 4
7 1
8 6
9 3
10 6
11 1
12 16
13 1
14 8
15 7
16 30
17 1
18 30
19 1
20 34
21 9
22 12
23 1
24 104
25 5
26 14
27 21
28 60
29 1
30 96
31 1
32 270
33 13
34 18
35 11
36 278
37 1
38 20
39 15
40 330
41 1
42 174
43 1
44 136
45 81
46 24
47 1
48 1176
49 7
50 130
51 19
52 186
53 1
54 588
55 15
56 804
57 21
58 30
59 1
60 1204
61 1
62 32
63 135
64 4590
65 17
66 402
67 1
68 310
69 25
70 348

List of values

[1, 1, 1, 2, 1, 4, 1, 6, 3, 6, 1, 16, 1, 8, 7, 30, 1, 30, 1, 34, 9, 12, 1, 104, 5, 14, 21, 60, 1, 96, 1, 270, 13, 18, 11, 278, 1, 20, 15, 330, 1, 174, 1, 136, 81, 24, 1, 1176, 7, 130, 19, 186, 1, 588, 15, 804, 21, 30, 1, 1204, 1, 32, 135, 4590, 17, 402, 1, 310, 25, 348]