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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.

A283894 Relative of Hofstadter Q-sequence: a(1) = 17, a(2) = 2; thereafter a(n) = a(n-a(n-1)) + a(n-a(n-2)).

Table of values

n a(n)
1 17
2 2
3 17
4 2
5 17
6 2
7 17
8 2
9 17
10 2
11 17
12 2
13 17
14 2
15 17
16 2
17 17
18 19
19 2
20 36
21 2
22 36
23 2
24 36
25 2
26 36
27 2
28 36
29 2
30 36
31 2
32 36
33 2
34 36
35 2
36 36
37 19
38 4
39 38
40 38
41 34
42 4
43 55
44 38
45 17
46 4
47 91
48 38
49 17
50 4
51 127
52 38
53 17
54 21
55 40
56 4
57 34
58 57
59 4
60 21
61 72
62 34
63 2
64 70
65 2
66 70
67 2
68 70
69 2
70 70
71 19
72 19
73 42
74 76
75 2

List of values

[17, 2, 17, 2, 17, 2, 17, 2, 17, 2, 17, 2, 17, 2, 17, 2, 17, 19, 2, 36, 2, 36, 2, 36, 2, 36, 2, 36, 2, 36, 2, 36, 2, 36, 2, 36, 19, 4, 38, 38, 34, 4, 55, 38, 17, 4, 91, 38, 17, 4, 127, 38, 17, 21, 40, 4, 34, 57, 4, 21, 72, 34, 2, 70, 2, 70, 2, 70, 2, 70, 19, 19, 42, 76, 2]

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