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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.

A302128 a(n) = a(a(n-2)) + a(n-a(n-1)) with a(1) = a(2) = a(3) = 1.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 2
6 3
7 3
8 3
9 4
10 4
11 5
12 5
13 5
14 6
15 6
16 7
17 7
18 8
19 8
20 8
21 8
22 9
23 9
24 10
25 10
26 11
27 11
28 12
29 12
30 13
31 13
32 13
33 13
34 13
35 14
36 14
37 15
38 15
39 16
40 16
41 17
42 17
43 18
44 18
45 19
46 19
47 20
48 20
49 20
50 21
51 21
52 21
53 21
54 21
55 21
56 22
57 22
58 23
59 23
60 24
61 24
62 25
63 25
64 26
65 26
66 27
67 27
68 28
69 28
70 29
71 29
72 30
73 30
74 31
75 31
76 32
77 32
78 32
79 33

List of values

[1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 13, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 20, 21, 21, 21, 21, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 32, 33]

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