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.

A384057 The number of integers k from 1 to n such that the greatest divisor of k that is a unitary divisor of n is a 3-smooth number.

Table of values

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

List of values

[1, 2, 3, 4, 4, 6, 6, 8, 9, 8, 10, 12, 12, 12, 12, 16, 16, 18, 18, 16, 18, 20, 22, 24, 24, 24, 27, 24, 28, 24, 30, 32, 30, 32, 24, 36, 36, 36, 36, 32, 40, 36, 42, 40, 36, 44, 46, 48, 48, 48, 48, 48, 52, 54, 40, 48, 54, 56, 58, 48, 60, 60, 54, 64, 48, 60, 66, 64]

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

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