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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.

A258133 Expansion of tri-digit zeros interlaced with an arithmetic progression of positive and negative numbers.

Table of values

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

List of values

[1, 0, 0, 0, 2, -2, 2, 0, 0, 0, 3, -3, 3, 0, 0, 0, 4, -4, 4, 0, 0, 0, 5, -5, 5, 0, 0, 0, 6, -6, 6, 0, 0, 0, 7, -7, 7, 0, 0, 0, 8, -8, 8, 0, 0, 0, 9, -9, 9, 0, 0, 0, 10, -10, 10, 0, 0, 0, 11, -11, 11, 0, 0, 0, 12, -12, 12, 0, 0, 0, 13, -13, 13, 0, 0, 0, 14]

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