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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.

A096532 Number of composite numbers not greater than the n-th composite number that do not divide any number not greater than the n-th composite number.

Table of values

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

List of values

[1, 2, 2, 3, 4, 4, 5, 6, 6, 6, 6, 7, 8, 8, 9, 10, 11, 11, 11, 11, 12, 13, 14, 14, 15, 16, 16, 16, 16, 17, 18, 18, 19, 19, 20, 20, 20, 21, 21, 22, 23, 23, 24, 25, 25, 26, 26, 26, 27, 27, 27, 28, 29, 29, 30, 30, 30, 31, 32, 32, 33, 34, 35, 35, 35, 36, 36, 37, 38, 39, 39, 39, 40, 40]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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