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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.

A369871 a(n) = least prime factor of A024411(n).

Table of values

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

List of values

[2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 5, 2, 3, 3, 2, 2, 5, 3, 2, 2, 3, 5, 2, 2, 2, 3, 2, 3, 5, 2, 7, 2, 3, 2, 3, 2, 7, 3, 2, 2, 3, 5, 3, 2, 2, 5, 2, 3, 2, 7, 2, 3, 2, 2, 5, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 2, 3, 7, 2, 5, 3, 2, 3, 5, 2, 7, 3, 2, 3, 2, 3, 2, 5, 2, 3]

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