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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.

A049100 a(n) = Euler phi function applied 4 times to n.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1
14 1
15 1
16 1
17 2
18 1
19 1
20 1
21 1
22 1
23 2
24 1
25 2
26 1
27 1
28 1
29 2
30 1
31 2
32 2
33 2
34 2
35 2
36 1
37 2
38 1
39 2
40 2
41 4
42 1
43 2
44 2
45 2
46 2
47 4
48 2
49 2
50 2
51 4
52 2
53 4
54 1
55 4
56 2
57 2
58 2
59 4
60 2
61 4
62 2
63 2
64 4
65 4
66 2
67 4
68 4
69 4
70 2
71 4
72 2
73 4
74 2
75 4
76 2
77 4
78 2
79 4
80 4
81 2
82 4
83 8
84 2
85 8
86 2
87 4
88 4
89 8
90 2
91 4
92 4
93 4
94 4
95 4
96 4
97 8
98 2
99 4
100 4
101 8
102 4
103 8
104 4
105 4

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 4, 1, 2, 2, 2, 2, 4, 2, 2, 2, 4, 2, 4, 1, 4, 2, 2, 2, 4, 2, 4, 2, 2, 4, 4, 2, 4, 4, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 4, 2, 4, 8, 2, 8, 2, 4, 4, 8, 2, 4, 4, 4, 4, 4, 4, 8, 2, 4, 4, 8, 4, 8, 4, 4]