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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.

A283904 Relative of Hofstadter Q-sequence: a(1) = 1, a(2) = 1; thereafter a(n) = a(n-2a(n-1)) + a(n-3a(n-2)).

Table of values

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

List of values

[1, 1, 1, 2, 2, 1, 3, 3, 1, 4, 4, 2, 2, 7, 2, 2, 6, 3, 3, 11, 2, 3, 12, 2, 2, 14, 2, 2, 14, 3, 2, 14, 4, 14, 15, 1, 15, 18, 1, 18, 20, 1, 20, 22, 1, 22, 23, 1, 23, 25, 1, 25, 26, 1, 26, 28, 1, 28, 29, 1, 29, 31, 1, 31, 32, 1, 32, 34, 1, 34, 35, 1, 35, 37, 1]

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