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.

A003978 Möbius transform of A003964.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 4
6 2
7 6
8 4
9 6
10 4
11 10
12 4
13 14
14 6
15 8
16 8
17 21
18 6
19 29
20 8
21 12
22 10
23 41
24 8
25 20
26 14
27 18
28 12
29 55
30 8
31 76
32 16
33 20
34 21
35 24
36 12
37 100
38 29
39 28
40 16
41 134
42 12
43 175
44 20
45 24
46 41
47 230
48 16
49 42
50 20
51 42
52 28
53 296
54 18
55 40
56 24
57 58
58 55
59 384
60 16
61 489
62 76
63 36
64 32
65 56
66 20
67 626
68 42
69 82
70 24
71 791
72 24

List of values

[1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 14, 6, 8, 8, 21, 6, 29, 8, 12, 10, 41, 8, 20, 14, 18, 12, 55, 8, 76, 16, 20, 21, 24, 12, 100, 29, 28, 16, 134, 12, 175, 20, 24, 41, 230, 16, 42, 20, 42, 28, 296, 18, 40, 24, 58, 55, 384, 16, 489, 76, 36, 32, 56, 20, 626, 42, 82, 24, 791, 24]

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

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