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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.

A117369 a(n) = smallest prime which is > smallest prime dividing n and is coprime to n.

Table of values

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

List of values

[2, 3, 5, 3, 7, 5, 11, 3, 5, 3, 13, 5, 17, 3, 7, 3, 19, 5, 23, 3, 5, 3, 29, 5, 7, 3, 5, 3, 31, 7, 37, 3, 5, 3, 11, 5, 41, 3, 5, 3, 43, 5, 47, 3, 7, 3, 53, 5, 11, 3, 5, 3, 59, 5, 7, 3, 5, 3, 61, 7, 67, 3, 5, 3, 7, 5, 71, 3, 5, 3, 73, 5, 79, 3, 7]

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