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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.

A029881 Möbius transform of Thue-Morse sequence A001285 (when shifted once right).

Table of values

n a(n)
1 1
2 1
3 1
4 -1
5 1
6 -2
7 0
8 1
9 0
10 -2
11 0
12 2
13 0
14 0
15 -1
16 -1
17 1
18 0
19 0
20 2
21 -1
22 0
23 1
24 -2
25 -1
26 0
27 0
28 0
29 1
30 2
31 0
32 1
33 0
34 -2
35 -1
36 0
37 0
38 0
39 0
40 -2
41 0
42 2
43 1
44 0
45 0
46 -2
47 0
48 2
49 0
50 2
51 -1
52 0
53 1
54 0
55 -1
56 0
57 0
58 -2
59 0
60 -2
61 0
62 0
63 1
64 -1
65 0
66 0
67 0
68 2
69 -2
70 2
71 1
72 0
73 0
74 0
75 1
76 0
77 1
78 0
79 0
80 2
81 -1
82 0
83 1
84 -2
85 -1
86 -2
87 -2
88 0
89 1
90 0
91 0
92 2
93 -1
94 0
95 0
96 -2
97 0
98 0
99 0
100 -2
101 1

List of values

[1, 1, 1, -1, 1, -2, 0, 1, 0, -2, 0, 2, 0, 0, -1, -1, 1, 0, 0, 2, -1, 0, 1, -2, -1, 0, 0, 0, 1, 2, 0, 1, 0, -2, -1, 0, 0, 0, 0, -2, 0, 2, 1, 0, 0, -2, 0, 2, 0, 2, -1, 0, 1, 0, -1, 0, 0, -2, 0, -2, 0, 0, 1, -1, 0, 0, 0, 2, -2, 2, 1, 0, 0, 0, 1, 0, 1, 0, 0, 2, -1, 0, 1, -2, -1, -2, -2, 0, 1, 0, 0, 2, -1, 0, 0, -2, 0, 0, 0, -2, 1]