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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.

A107502 Theta series of quadratic form with Gram matrix [ 4, 1, 0, -1; 1, 10, 0, 3; 0, 0, 26, 13; -1, 3, 13, 36].

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 0
5 2
6 2
7 0
8 4
9 0
10 0
11 2
12 0
13 2
14 0
15 6
16 0
17 0
18 10
19 8
20 14
21 12
22 0
23 0
24 20
25 0
26 6
27 0
28 16
29 0
30 0
31 8
32 18
33 18
34 12
35 0
36 0
37 12
38 0
39 8
40 0
41 6
42 0
43 0
44 30
45 22
46 20
47 10
48 0
49 0
50 22
51 0
52 14
53 0
54 38
55 0
56 0
57 22
58 30
59 18
60 48
61 0
62 0
63 30
64 0
65 12
66 0
67 22
68 0
69 0
70 38
71 16
72 50
73 30
74 0
75 0
76 46
77 0

List of values

[1, 0, 2, 0, 0, 2, 2, 0, 4, 0, 0, 2, 0, 2, 0, 6, 0, 0, 10, 8, 14, 12, 0, 0, 20, 0, 6, 0, 16, 0, 0, 8, 18, 18, 12, 0, 0, 12, 0, 8, 0, 6, 0, 0, 30, 22, 20, 10, 0, 0, 22, 0, 14, 0, 38, 0, 0, 22, 30, 18, 48, 0, 0, 30, 0, 12, 0, 22, 0, 0, 38, 16, 50, 30, 0, 0, 46, 0]

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