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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.

A371880 Smallest number reachable starting from 1 and taking n steps either doubling or doubling+reversing.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 23
6 46
7 29
8 58
9 71
10 34
11 68
12 37
13 47
14 49
15 89
16 79
17 59
18 19
19 38
20 67
21 35
22 7
23 14
24 28
25 56
26 13
27 26
28 25
29 5
30 1
31 2
32 4
33 8
34 16
35 23
36 46
37 29
38 58
39 17
40 34
41 68
42 37
43 47
44 49
45 89
46 79
47 59
48 19
49 38
50 67
51 35
52 7
53 14
54 28
55 56
56 13
57 26
58 25
59 5
60 1
61 2
62 4
63 8
64 16
65 23
66 46
67 29
68 58
69 17

List of values

[1, 2, 4, 8, 16, 23, 46, 29, 58, 71, 34, 68, 37, 47, 49, 89, 79, 59, 19, 38, 67, 35, 7, 14, 28, 56, 13, 26, 25, 5, 1, 2, 4, 8, 16, 23, 46, 29, 58, 17, 34, 68, 37, 47, 49, 89, 79, 59, 19, 38, 67, 35, 7, 14, 28, 56, 13, 26, 25, 5, 1, 2, 4, 8, 16, 23, 46, 29, 58, 17]

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

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