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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.

A364044 Expansion of Sum_{k>0} x^(2*k) / (1 + x^(5*k)).

Table of values

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

List of values

[0, 1, 0, 1, 0, 1, -1, 1, 0, 1, 0, 2, 0, 0, 0, 1, -1, 1, 0, 1, -1, 2, 0, 2, 0, 1, -1, 0, 0, 1, 0, 2, 0, 0, -1, 2, -1, 1, 0, 1, 0, 1, 0, 2, 0, 1, -1, 2, -1, 1, -1, 2, 0, 0, 0, 0, -1, 1, 0, 2, 0, 2, -1, 2, 0, 2, -1, 0, 0, 0, 0, 3, 0, 0, 0, 1, -2, 1, 0, 1, -1, 2, 0, 2, -1, 1, -1, 2, 0, 1, -1, 2, 0, 0, 0, 3, -1, 0, 0, 1]