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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.

A080848 a(n) = n*(mu(n)+2), where mu is the Moebius function (A008683).

Table of values

n a(n)
1 3
2 2
3 3
4 8
5 5
6 18
7 7
8 16
9 18
10 30
11 11
12 24
13 13
14 42
15 45
16 32
17 17
18 36
19 19
20 40
21 63
22 66
23 23
24 48
25 50
26 78
27 54
28 56
29 29
30 30
31 31
32 64
33 99
34 102
35 105
36 72
37 37
38 114
39 117
40 80
41 41
42 42
43 43
44 88
45 90
46 138
47 47
48 96
49 98
50 100
51 153
52 104
53 53
54 108
55 165
56 112
57 171
58 174
59 59
60 120
61 61
62 186
63 126
64 128
65 195
66 66

List of values

[3, 2, 3, 8, 5, 18, 7, 16, 18, 30, 11, 24, 13, 42, 45, 32, 17, 36, 19, 40, 63, 66, 23, 48, 50, 78, 54, 56, 29, 30, 31, 64, 99, 102, 105, 72, 37, 114, 117, 80, 41, 42, 43, 88, 90, 138, 47, 96, 98, 100, 153, 104, 53, 108, 165, 112, 171, 174, 59, 120, 61, 186, 126, 128, 195, 66]

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

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