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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.

A207944 Expansion of Product_{i>=1} (1 + x^(2*i + 1))/(1 - x^(2*i + 1)).

Table of values

n a(n)
0 1
1 0
2 0
3 2
4 0
5 2
6 2
7 2
8 4
9 4
10 6
11 6
12 10
13 10
14 14
15 18
16 20
17 26
18 32
19 38
20 46
21 58
22 66
23 82
24 98
25 116
26 138
27 166
28 194
29 230
30 274
31 318
32 376
33 442
34 514
35 602
36 704
37 814
38 950
39 1102
40 1274
41 1474
42 1706
43 1962
44 2262
45 2606
46 2986
47 3430
48 3934
49 4496
50 5144
51 5878
52 6698
53 7638
54 8698
55 9886

List of values

[1, 0, 0, 2, 0, 2, 2, 2, 4, 4, 6, 6, 10, 10, 14, 18, 20, 26, 32, 38, 46, 58, 66, 82, 98, 116, 138, 166, 194, 230, 274, 318, 376, 442, 514, 602, 704, 814, 950, 1102, 1274, 1474, 1706, 1962, 2262, 2606, 2986, 3430, 3934, 4496, 5144, 5878, 6698, 7638, 8698, 9886]