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A375159 Expansion of Sum_{k in Z} x^(4*k) / (1 - x^(7*k+2)).

Table of values

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

List of values

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