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.

A224531 Triangle in which row n > 1 has the n values x such that phi(x) = A007374(n), We define the first row to be 0.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 6
7 5
8 8
9 10
10 12
11 15
12 16
13 20
14 24
15 30
16 13
17 21
18 26
19 28
20 36
21 42
22 51
23 64
24 68
25 80
26 96
27 102
28 120
29 37
30 57
31 63
32 74
33 76
34 108
35 114
36 126
37 41
38 55
39 75
40 82
41 88
42 100
43 110
44 132
45 150
46 35
47 39
48 45
49 52
50 56
51 70
52 72
53 78
54 84
55 90
56 65
57 104
58 105
59 112
60 130
61 140
62 144
63 156
64 168
65 180
66 210

List of values

[0, 1, 2, 3, 4, 6, 5, 8, 10, 12, 15, 16, 20, 24, 30, 13, 21, 26, 28, 36, 42, 51, 64, 68, 80, 96, 102, 120, 37, 57, 63, 74, 76, 108, 114, 126, 41, 55, 75, 82, 88, 100, 110, 132, 150, 35, 39, 45, 52, 56, 70, 72, 78, 84, 90, 65, 104, 105, 112, 130, 140, 144, 156, 168, 180, 210]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.