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.

A343188 a(1) = a(2) = a(3) = 1; a(n+3) = Sum_{d|n} mu(n/d) * a(d).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 0
6 0
7 0
8 -1
9 -1
10 -1
11 -2
12 -2
13 -1
14 -3
15 -2
16 -2
17 -3
18 -2
19 -1
20 -4
21 0
22 -2
23 -3
24 0
25 0
26 -4
27 4
28 0
29 -3
30 5
31 3
32 -4
33 9
34 2
35 -2
36 11
37 5
38 -1
39 15
40 4
41 0
42 16
43 10
44 -1
45 20
46 9
47 1
48 24
49 12
50 0
51 25
52 12
53 1
54 28
55 16
56 0
57 25
58 19
59 2
60 26
61 22
62 1
63 26
64 21
65 -2
66 28
67 25
68 0
69 20
70 24
71 -2
72 23
73 30
74 -3
75 10

List of values

[1, 1, 1, 1, 0, 0, 0, -1, -1, -1, -2, -2, -1, -3, -2, -2, -3, -2, -1, -4, 0, -2, -3, 0, 0, -4, 4, 0, -3, 5, 3, -4, 9, 2, -2, 11, 5, -1, 15, 4, 0, 16, 10, -1, 20, 9, 1, 24, 12, 0, 25, 12, 1, 28, 16, 0, 25, 19, 2, 26, 22, 1, 26, 21, -2, 28, 25, 0, 20, 24, -2, 23, 30, -3, 10]

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

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