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.

A073256 a(n) = phi(n-th composite number).

Table of values

n a(n)
1 2
2 2
3 4
4 6
5 4
6 4
7 6
8 8
9 8
10 6
11 8
12 12
13 10
14 8
15 20
16 12
17 18
18 12
19 8
20 16
21 20
22 16
23 24
24 12
25 18
26 24
27 16
28 12
29 20
30 24
31 22
32 16
33 42
34 20
35 32
36 24
37 18
38 40
39 24
40 36
41 28
42 16
43 30
44 36
45 32
46 48
47 20
48 32
49 44
50 24
51 24
52 36
53 40
54 36
55 60
56 24
57 32
58 54
59 40
60 24
61 64
62 42
63 56
64 40
65 24
66 72
67 44
68 60
69 46
70 72
71 32
72 42
73 60

List of values

[2, 2, 4, 6, 4, 4, 6, 8, 8, 6, 8, 12, 10, 8, 20, 12, 18, 12, 8, 16, 20, 16, 24, 12, 18, 24, 16, 12, 20, 24, 22, 16, 42, 20, 32, 24, 18, 40, 24, 36, 28, 16, 30, 36, 32, 48, 20, 32, 44, 24, 24, 36, 40, 36, 60, 24, 32, 54, 40, 24, 64, 42, 56, 40, 24, 72, 44, 60, 46, 72, 32, 42, 60]

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

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