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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.

A004016 Theta series of planar hexagonal lattice A_2.

Table of values

n a(n)
0 1
1 6
2 0
3 6
4 6
5 0
6 0
7 12
8 0
9 6
10 0
11 0
12 6
13 12
14 0
15 0
16 6
17 0
18 0
19 12
20 0
21 12
22 0
23 0
24 0
25 6
26 0
27 6
28 12
29 0
30 0
31 12
32 0
33 0
34 0
35 0
36 6
37 12
38 0
39 12
40 0
41 0
42 0
43 12
44 0
45 0
46 0
47 0
48 6
49 18
50 0
51 0
52 12
53 0
54 0
55 0
56 0
57 12
58 0
59 0
60 0
61 12
62 0
63 12
64 6
65 0
66 0
67 12
68 0
69 0
70 0
71 0
72 0
73 12
74 0
75 6
76 12
77 0
78 0
79 12
80 0

List of values

[1, 6, 0, 6, 6, 0, 0, 12, 0, 6, 0, 0, 6, 12, 0, 0, 6, 0, 0, 12, 0, 12, 0, 0, 0, 6, 0, 6, 12, 0, 0, 12, 0, 0, 0, 0, 6, 12, 0, 12, 0, 0, 0, 12, 0, 0, 0, 0, 6, 18, 0, 0, 12, 0, 0, 0, 0, 12, 0, 0, 0, 12, 0, 12, 6, 0, 0, 12, 0, 0, 0, 0, 0, 12, 0, 6, 12, 0, 0, 12, 0]

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