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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.

A099896 A permutation of the natural numbers where a(n) = n XOR [n/2] XOR [n/4].

Table of values

n a(n)
1 1
2 3
3 2
4 7
5 6
6 4
7 5
8 14
9 15
10 13
11 12
12 9
13 8
14 10
15 11
16 28
17 29
18 31
19 30
20 27
21 26
22 24
23 25
24 18
25 19
26 17
27 16
28 21
29 20
30 22
31 23
32 56
33 57
34 59
35 58
36 63
37 62
38 60
39 61
40 54
41 55
42 53
43 52
44 49
45 48
46 50
47 51
48 36
49 37
50 39
51 38
52 35
53 34
54 32
55 33
56 42
57 43
58 41
59 40
60 45
61 44
62 46
63 47
64 112
65 113
66 115
67 114
68 119
69 118
70 116

List of values

[1, 3, 2, 7, 6, 4, 5, 14, 15, 13, 12, 9, 8, 10, 11, 28, 29, 31, 30, 27, 26, 24, 25, 18, 19, 17, 16, 21, 20, 22, 23, 56, 57, 59, 58, 63, 62, 60, 61, 54, 55, 53, 52, 49, 48, 50, 51, 36, 37, 39, 38, 35, 34, 32, 33, 42, 43, 41, 40, 45, 44, 46, 47, 112, 113, 115, 114, 119, 118, 116]

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

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