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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.

A279368 Expansion of Product_{k>=1} (1+3*x^(k^2)).

Table of values

n a(n)
0 1
1 3
2 0
3 0
4 3
5 9
6 0
7 0
8 0
9 3
10 9
11 0
12 0
13 9
14 27
15 0
16 3
17 9
18 0
19 0
20 9
21 27
22 0
23 0
24 0
25 12
26 36
27 0
28 0
29 36
30 108
31 0
32 0
33 0
34 9
35 27
36 3
37 9
38 27
39 81
40 9
41 36
42 27
43 0
44 0
45 36
46 108
47 0
48 0
49 30
50 117
51 81
52 9
53 36
54 108
55 243
56 27
57 81
58 9
59 27
60 0
61 36
62 135
63 81
64 3
65 126
66 351
67 0
68 9
69 54
70 108
71 81
72 0

List of values

[1, 3, 0, 0, 3, 9, 0, 0, 0, 3, 9, 0, 0, 9, 27, 0, 3, 9, 0, 0, 9, 27, 0, 0, 0, 12, 36, 0, 0, 36, 108, 0, 0, 0, 9, 27, 3, 9, 27, 81, 9, 36, 27, 0, 0, 36, 108, 0, 0, 30, 117, 81, 9, 36, 108, 243, 27, 81, 9, 27, 0, 36, 135, 81, 3, 126, 351, 0, 9, 54, 108, 81, 0]

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