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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.

A258570 Smallest prime factors of 5-full numbers, a(1)=1.

Table of values

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

List of values

[1, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 5, 2, 3, 2, 2, 2, 5, 2, 7, 3, 2, 2, 2, 2, 3, 2, 2, 2, 5, 2, 2, 7, 2, 2, 2, 11, 3, 2, 2, 2, 2, 2, 2, 13, 2, 5, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 3, 2, 7, 2, 2, 2, 2, 2, 2, 2, 17, 2, 3, 2, 2, 11, 2, 5, 2, 2, 2, 2, 2, 3, 19, 2, 2, 2]

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