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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.

A071520 Number of 5-smooth numbers (A051037) <= n.

Table of values

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

List of values

[1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 9, 10, 10, 10, 11, 12, 12, 13, 13, 14, 14, 14, 14, 15, 16, 16, 17, 17, 17, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 22, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28]

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