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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.

A323424 Number of cycles (mod n) under Collatz map.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 2
6 2
7 3
8 2
9 2
10 2
11 3
12 2
13 3
14 2
15 3
16 2
17 2
18 2
19 3
20 2
21 2
22 2
23 3
24 2
25 2
26 2
27 4
28 2
29 2
30 2
31 3
32 2
33 2
34 2
35 3
36 2
37 3
38 3
39 3
40 2
41 3
42 2
43 4
44 2
45 3
46 2
47 3
48 2
49 3
50 2
51 3
52 2
53 2
54 2
55 4
56 2
57 2
58 2
59 3
60 2
61 2
62 2
63 3
64 2
65 2
66 2
67 3
68 2
69 3
70 2
71 3
72 2
73 2
74 2
75 3
76 3
77 2
78 2
79 3
80 2
81 2
82 2
83 4
84 2
85 2
86 2
87 3

List of values

[1, 1, 2, 1, 2, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3, 2, 2, 2, 3, 2, 3, 3, 3, 2, 3, 2, 4, 2, 3, 2, 3, 2, 3, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 2, 3, 3, 2, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3]

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