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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.

A154444 Permutation of nonnegative integers: The inverse of A154443.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 5
5 4
6 6
7 7
8 10
9 11
10 8
11 9
12 12
13 13
14 14
15 15
16 20
17 21
18 22
19 23
20 17
21 16
22 18
23 19
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 40
33 41
34 42
35 43
36 44
37 45
38 46
39 47
40 34
41 35
42 32
43 33
44 36
45 37
46 38
47 39
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 55
56 56
57 57
58 58
59 59
60 60
61 61
62 62
63 63
64 80
65 81
66 82
67 83
68 84
69 85
70 86
71 87

List of values

[0, 1, 2, 3, 5, 4, 6, 7, 10, 11, 8, 9, 12, 13, 14, 15, 20, 21, 22, 23, 17, 16, 18, 19, 24, 25, 26, 27, 28, 29, 30, 31, 40, 41, 42, 43, 44, 45, 46, 47, 34, 35, 32, 33, 36, 37, 38, 39, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 80, 81, 82, 83, 84, 85, 86, 87]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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