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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.

A263401 Expansion of Product_{k>=1} (1 + x^k - x^(2*k)).

Table of values

n a(n)
0 1
1 1
2 0
3 2
4 0
5 1
6 3
7 1
8 1
9 2
10 6
11 1
12 4
13 2
14 5
15 10
16 5
17 4
18 9
19 7
20 8
21 21
22 9
23 13
24 13
25 19
26 13
27 27
28 32
29 23
30 29
31 33
32 27
33 45
34 37
35 45
36 79
37 49
38 57
39 68
40 82
41 67
42 101
43 83
44 109
45 155
46 124
47 113
48 174
49 148
50 171
51 196
52 215
53 198
54 262
55 310
56 269
57 330
58 314
59 342
60 414
61 430
62 393
63 536
64 493

List of values

[1, 1, 0, 2, 0, 1, 3, 1, 1, 2, 6, 1, 4, 2, 5, 10, 5, 4, 9, 7, 8, 21, 9, 13, 13, 19, 13, 27, 32, 23, 29, 33, 27, 45, 37, 45, 79, 49, 57, 68, 82, 67, 101, 83, 109, 155, 124, 113, 174, 148, 171, 196, 215, 198, 262, 310, 269, 330, 314, 342, 414, 430, 393, 536, 493]