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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.

A279288 a(n) = denominator of (phi(n)/tau(n)).

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 1
6 2
7 1
8 1
9 1
10 1
11 1
12 3
13 1
14 2
15 1
16 5
17 1
18 1
19 1
20 3
21 1
22 2
23 1
24 1
25 3
26 1
27 2
28 1
29 1
30 1
31 1
32 3
33 1
34 1
35 1
36 3
37 1
38 2
39 1
40 1
41 1
42 2
43 1
44 3
45 1
46 2
47 1
48 5
49 1
50 3
51 1
52 1
53 1
54 4
55 1
56 1
57 1
58 1
59 1
60 3
61 1
62 2
63 1
64 7
65 1
66 2
67 1
68 3
69 1
70 1
71 1
72 1
73 1
74 1
75 3
76 1
77 1
78 1
79 1
80 5
81 5
82 1
83 1
84 1
85 1
86 2
87 1

List of values

[1, 2, 1, 3, 1, 2, 1, 1, 1, 1, 1, 3, 1, 2, 1, 5, 1, 1, 1, 3, 1, 2, 1, 1, 3, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 3, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 5, 1, 3, 1, 1, 1, 4, 1, 1, 1, 1, 1, 3, 1, 2, 1, 7, 1, 2, 1, 3, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 5, 5, 1, 1, 1, 1, 2, 1]