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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.

A384040 The number of integers k from 1 to n such that gcd(n,k) is a cubefull number.

Table of values

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

List of values

[1, 1, 2, 2, 4, 2, 6, 5, 6, 4, 10, 4, 12, 6, 8, 10, 16, 6, 18, 8, 12, 10, 22, 10, 20, 12, 19, 12, 28, 8, 30, 20, 20, 16, 24, 12, 36, 18, 24, 20, 40, 12, 42, 20, 24, 22, 46, 20, 42, 20, 32, 24, 52, 19, 40, 30, 36, 28, 58, 16, 60, 30, 36, 40, 48, 20, 66, 32, 44, 24]

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

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