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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.

A005206 Hofstadter G-sequence: a(0) = 0; a(n) = n - a(a(n-1)) for n > 0.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 3
5 3
6 4
7 4
8 5
9 6
10 6
11 7
12 8
13 8
14 9
15 9
16 10
17 11
18 11
19 12
20 12
21 13
22 14
23 14
24 15
25 16
26 16
27 17
28 17
29 18
30 19
31 19
32 20
33 21
34 21
35 22
36 22
37 23
38 24
39 24
40 25
41 25
42 26
43 27
44 27
45 28
46 29
47 29
48 30
49 30
50 31
51 32
52 32
53 33
54 33
55 34
56 35
57 35
58 36
59 37
60 37
61 38
62 38
63 39
64 40
65 40
66 41
67 42
68 42
69 43
70 43
71 44
72 45
73 45
74 46
75 46
76 47

List of values

[0, 1, 1, 2, 3, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9, 9, 10, 11, 11, 12, 12, 13, 14, 14, 15, 16, 16, 17, 17, 18, 19, 19, 20, 21, 21, 22, 22, 23, 24, 24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 35, 35, 36, 37, 37, 38, 38, 39, 40, 40, 41, 42, 42, 43, 43, 44, 45, 45, 46, 46, 47]

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