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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.

A349218 a(n) is the X-coordinate of the n-th point of the 7-dragon curve; sequence A349219 gives Y-coordinates.

Table of values

n a(n)
0 0
1 1
2 0
3 1
4 1
5 2
6 1
7 2
8 1
9 1
10 0
11 1
12 0
13 0
14 -1
15 0
16 -1
17 0
18 0
19 1
20 0
21 1
22 1
23 2
24 2
25 1
26 1
27 2
28 2
29 3
30 2
31 3
32 3
33 4
34 3
35 4
36 3
37 3
38 2
39 3
40 2
41 2
42 1
43 2
44 1
45 2
46 2
47 3
48 2
49 3
50 2
51 2
52 1
53 2
54 1
55 1
56 0
57 0
58 1
59 1
60 0
61 0
62 1
63 1
64 0
65 0
66 -1
67 0
68 -1
69 -1
70 -2
71 -1
72 -2
73 -1
74 -1
75 0
76 -1
77 0
78 -1
79 -1
80 -2
81 -1

List of values

[0, 1, 0, 1, 1, 2, 1, 2, 1, 1, 0, 1, 0, 0, -1, 0, -1, 0, 0, 1, 0, 1, 1, 2, 2, 1, 1, 2, 2, 3, 2, 3, 3, 4, 3, 4, 3, 3, 2, 3, 2, 2, 1, 2, 1, 2, 2, 3, 2, 3, 2, 2, 1, 2, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, -1, 0, -1, -1, -2, -1, -2, -1, -1, 0, -1, 0, -1, -1, -2, -1]

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