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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.

A071665 Permutation A057505 applied four times ("^4"), permutation A071661 squared.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 4
5 7
6 5
7 6
8 8
9 9
10 17
11 12
12 16
13 21
14 10
15 18
16 11
17 14
18 20
19 13
20 15
21 19
22 22
23 23
24 45
25 31
26 44
27 58
28 26
29 49
30 30
31 42
32 57
33 35
34 40
35 56
36 63
37 24
38 46
39 32
40 43
41 59
42 25
43 47
44 28
45 37
46 54
47 48
48 34
49 53
50 62
51 27
52 50
53 29
54 38
55 55
56 33
57 39
58 51
59 61
60 36
61 41
62 52
63 60
64 64
65 65
66 129
67 87
68 128
69 170
70 73

List of values

[0, 1, 2, 3, 4, 7, 5, 6, 8, 9, 17, 12, 16, 21, 10, 18, 11, 14, 20, 13, 15, 19, 22, 23, 45, 31, 44, 58, 26, 49, 30, 42, 57, 35, 40, 56, 63, 24, 46, 32, 43, 59, 25, 47, 28, 37, 54, 48, 34, 53, 62, 27, 50, 29, 38, 55, 33, 39, 51, 61, 36, 41, 52, 60, 64, 65, 129, 87, 128, 170, 73]

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