cp's OEIS Frontend

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.

A186929 Number of squarefree composite integers greater than or equal to n whose proper divisors are all less than n.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 1
6 3
7 2
8 5
9 5
10 5
11 4
12 8
13 8
14 13
15 12
16 12
17 12
18 18
19 18
20 25
21 25
22 25
23 24
24 32
25 32
26 32
27 31
28 31
29 31
30 40
31 39
32 49
33 49
34 49
35 48
36 49
37 49
38 60
39 59
40 59
41 59
42 71
43 70
44 83
45 83
46 83
47 82
48 96
49 96
50 96
51 96
52 96
53 96
54 111
55 111
56 112
57 112
58 112
59 111
60 127
61 127
62 144
63 143
64 143
65 143
66 144
67 143
68 161
69 161
70 161
71 160

List of values

[0, 0, 0, 1, 1, 3, 2, 5, 5, 5, 4, 8, 8, 13, 12, 12, 12, 18, 18, 25, 25, 25, 24, 32, 32, 32, 31, 31, 31, 40, 39, 49, 49, 49, 48, 49, 49, 60, 59, 59, 59, 71, 70, 83, 83, 83, 82, 96, 96, 96, 96, 96, 96, 111, 111, 112, 112, 112, 111, 127, 127, 144, 143, 143, 143, 144, 143, 161, 161, 161, 160]

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

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