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.

A143152 Inverse Möbius transform of the least prime factor of n: A051731 * A020639.

Table of values

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

List of values

[1, 3, 4, 5, 6, 8, 8, 7, 7, 10, 12, 12, 14, 12, 12, 9, 18, 13, 20, 14, 14, 16, 24, 16, 11, 18, 10, 16, 30, 20, 32, 11, 18, 22, 18, 19, 38, 24, 20, 18, 42, 22, 44, 20, 18, 28, 48, 20, 15, 17, 24, 22, 54, 18, 22, 20, 26, 34, 60, 28, 62, 36, 20, 13, 24, 26, 68, 26, 30, 26, 72, 25, 74]

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

Content is available under The OEIS End-User License Agreement.