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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.

A014458 Theta series of quadratic form with Gram matrix [ 2, 1, 0; 1, 4, 1; 0, 1, 2 ].

Table of values

n a(n)
0 1
1 4
2 12
3 0
4 20
5 8
6 10
7 8
8 28
9 4
10 32
11 16
12 0
13 8
14 40
15 8
16 52
17 8
18 12
19 16
20 40
21 0
22 40
23 16
24 26
25 20
26 64
27 0
28 40
29 24
30 0
31 24
32 60
33 8
34 72
35 16
36 20
37 24
38 40
39 0
40 64
41 24
42 32
43 16
44 80
45 8
46 80
47 16
48 0
49 28
50 84
51 16
52 40
53 24
54 10
55 16
56 104
57 0
58 96
59 32
60 40
61 24
62 40
63 8
64 116
65 32
66 0
67 32
68 40
69 16
70 80
71 48
72 28
73 16
74 128
75 0
76 80

List of values

[1, 4, 12, 0, 20, 8, 10, 8, 28, 4, 32, 16, 0, 8, 40, 8, 52, 8, 12, 16, 40, 0, 40, 16, 26, 20, 64, 0, 40, 24, 0, 24, 60, 8, 72, 16, 20, 24, 40, 0, 64, 24, 32, 16, 80, 8, 80, 16, 0, 28, 84, 16, 40, 24, 10, 16, 104, 0, 96, 32, 40, 24, 40, 8, 116, 32, 0, 32, 40, 16, 80, 48, 28, 16, 128, 0, 80]

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