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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.

A222641 Number of iterations in Collatz (3x+1) trajectory of n to reach 1 from the highest term.

Table of values

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

List of values

[0, 1, 4, 2, 4, 4, 11, 3, 11, 4, 11, 4, 8, 11, 10, 4, 11, 11, 17, 7, 6, 11, 10, 10, 17, 8, 34, 11, 17, 10, 34, 5, 25, 11, 10, 11, 20, 17, 24, 8, 34, 6, 26, 11, 15, 10, 34, 11, 23, 17, 21, 11, 10, 34, 34, 19, 26, 17, 24, 10, 18, 34, 34, 6, 26, 25, 24, 14, 13, 10]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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