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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.

A091374 Number of numbers <= n having fewer prime factors than the value of their smallest prime factor.

Table of values

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

List of values

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

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

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