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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.

A166549 The number of halving steps of the Collatz 3x+1 map to reach 1 starting from 2n-1.

Table of values

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

List of values

[0, 5, 4, 11, 13, 10, 7, 12, 9, 14, 6, 11, 16, 70, 13, 67, 18, 10, 15, 23, 69, 20, 12, 66, 17, 17, 9, 71, 22, 22, 14, 68, 19, 19, 11, 65, 73, 11, 16, 24, 16, 70, 8, 21, 21, 59, 13, 67, 75, 18, 18, 56, 26, 64, 72, 45, 10, 23, 15, 23, 61, 31, 69, 31, 77, 20, 20, 28, 58, 28, 12, 66, 74, 74, 17]

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

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