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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.

A039650 Prime reached by iterating f(x) = phi(x)+1 on n.

Table of values

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

List of values

[2, 2, 3, 3, 5, 3, 7, 5, 7, 5, 11, 5, 13, 7, 7, 7, 17, 7, 19, 7, 13, 11, 23, 7, 13, 13, 19, 13, 29, 7, 31, 17, 13, 17, 13, 13, 37, 19, 13, 17, 41, 13, 43, 13, 13, 23, 47, 17, 43, 13, 13, 13, 53, 19, 41, 13, 37, 29, 59, 17, 61, 31, 37, 13, 43, 13, 67, 13, 13, 13, 71, 13, 73, 37, 41]

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