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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.

A138466 a(1)=1; for n >= 2, a(n) = n - floor((1/2)*a(a(n-1))).

Table of values

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

List of values

[1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15, 16, 16, 17, 18, 19, 19, 20, 21, 21, 22, 23, 24, 24, 25, 26, 27, 27, 28, 29, 30, 30, 31, 32, 32, 33, 34, 35, 35, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 46, 46, 47, 48, 49, 49, 50, 51, 51, 52, 53, 54]

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