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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.

A193863 Expansion of Product_{n>=0} (1 + q*(-q^2)^n) / (1 - q*(-q^2)^n).

Table of values

n a(n)
0 1
1 2
2 2
3 0
4 -2
5 0
6 4
7 4
8 -2
9 -6
10 0
11 8
12 4
13 -8
14 -8
15 8
16 14
17 -4
18 -18
19 0
20 24
21 8
22 -28
23 -20
24 28
25 34
26 -24
27 -48
28 16
29 64
30 0
31 -76
32 -18
33 88
34 44
35 -96
36 -78
37 96
38 116
39 -88
40 -160
41 68
42 208
43 -32
44 -252
45 -16
46 296
47 84
48 -332
49 -170
50 354
51 272
52 -360
53 -392
54 344
55 528
56 -296
57 -672
58 216
59 824
60 -96
61 -976
62 -72
63 1116
64 286
65 -1240
66 -552
67 1336
68 876
69 -1384

List of values

[1, 2, 2, 0, -2, 0, 4, 4, -2, -6, 0, 8, 4, -8, -8, 8, 14, -4, -18, 0, 24, 8, -28, -20, 28, 34, -24, -48, 16, 64, 0, -76, -18, 88, 44, -96, -78, 96, 116, -88, -160, 68, 208, -32, -252, -16, 296, 84, -332, -170, 354, 272, -360, -392, 344, 528, -296, -672, 216, 824, -96, -976, -72, 1116, 286, -1240, -552, 1336, 876, -1384]