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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.

A186813 a(n) = n if n odd, a(2n) = 3n if n odd, a(4n) = 2n.

Table of values

n a(n)
0 0
1 1
2 3
3 3
4 2
5 5
6 9
7 7
8 4
9 9
10 15
11 11
12 6
13 13
14 21
15 15
16 8
17 17
18 27
19 19
20 10
21 21
22 33
23 23
24 12
25 25
26 39
27 27
28 14
29 29
30 45
31 31
32 16
33 33
34 51
35 35
36 18
37 37
38 57
39 39
40 20
41 41
42 63
43 43
44 22
45 45
46 69
47 47
48 24
49 49
50 75
51 51
52 26
53 53
54 81
55 55
56 28
57 57
58 87
59 59
60 30
61 61
62 93
63 63
64 32
65 65
66 99
67 67
68 34
69 69
70 105
71 71
72 36

List of values

[0, 1, 3, 3, 2, 5, 9, 7, 4, 9, 15, 11, 6, 13, 21, 15, 8, 17, 27, 19, 10, 21, 33, 23, 12, 25, 39, 27, 14, 29, 45, 31, 16, 33, 51, 35, 18, 37, 57, 39, 20, 41, 63, 43, 22, 45, 69, 47, 24, 49, 75, 51, 26, 53, 81, 55, 28, 57, 87, 59, 30, 61, 93, 63, 32, 65, 99, 67, 34, 69, 105, 71, 36]

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