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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.

A341121 a(n) is the Y-coordinate of the n-th point of the space filling curve C defined in Comments section; A341120 gives X-coordinates.

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 0
5 0
6 1
7 2
8 2
9 2
10 3
11 4
12 4
13 3
14 3
15 3
16 4
17 4
18 5
19 6
20 6
21 7
22 7
23 7
24 6
25 7
26 7
27 7
28 6
29 6
30 5
31 4
32 4
33 4
34 5
35 6
36 6
37 7
38 7
39 7
40 6
41 7
42 7
43 7
44 6
45 6
46 5
47 4
48 4
49 3
50 3
51 3
52 4
53 4
54 3
55 2
56 2
57 2
58 1
59 0
60 0
61 1
62 1
63 1
64 0
65 0
66 1
67 2
68 2
69 3
70 3
71 3
72 2
73 3
74 3
75 3
76 2
77 2
78 1
79 0
80 0
81 1
82 1
83 1
84 0
85 0
86 1

List of values

[0, 1, 1, 1, 0, 0, 1, 2, 2, 2, 3, 4, 4, 3, 3, 3, 4, 4, 5, 6, 6, 7, 7, 7, 6, 7, 7, 7, 6, 6, 5, 4, 4, 4, 5, 6, 6, 7, 7, 7, 6, 7, 7, 7, 6, 6, 5, 4, 4, 3, 3, 3, 4, 4, 3, 2, 2, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1]

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