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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.

A186749 a(n) = phi(n - phi(n) + 3).

Table of values

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

List of values

[2, 2, 2, 4, 2, 6, 2, 6, 2, 6, 2, 10, 2, 10, 4, 10, 2, 8, 2, 8, 4, 8, 2, 18, 4, 16, 4, 18, 2, 20, 2, 18, 8, 12, 6, 18, 2, 22, 6, 18, 2, 20, 2, 18, 8, 18, 2, 24, 4, 20, 10, 30, 2, 24, 6, 24, 8, 20, 2, 46, 2, 24, 8, 24, 8, 42, 2, 24, 12, 42, 2, 32, 2, 40, 18, 42]

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