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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.

A265667 Permutation of nonnegative integers: a(n) = n + floor(n/3)*(-1)^(n mod 3).

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 3
5 6
6 8
7 5
8 10
9 12
10 7
11 14
12 16
13 9
14 18
15 20
16 11
17 22
18 24
19 13
20 26
21 28
22 15
23 30
24 32
25 17
26 34
27 36
28 19
29 38
30 40
31 21
32 42
33 44
34 23
35 46
36 48
37 25
38 50
39 52
40 27
41 54
42 56
43 29
44 58
45 60
46 31
47 62
48 64
49 33
50 66
51 68
52 35
53 70
54 72
55 37
56 74
57 76
58 39
59 78
60 80
61 41
62 82
63 84
64 43
65 86
66 88
67 45

List of values

[0, 1, 2, 4, 3, 6, 8, 5, 10, 12, 7, 14, 16, 9, 18, 20, 11, 22, 24, 13, 26, 28, 15, 30, 32, 17, 34, 36, 19, 38, 40, 21, 42, 44, 23, 46, 48, 25, 50, 52, 27, 54, 56, 29, 58, 60, 31, 62, 64, 33, 66, 68, 35, 70, 72, 37, 74, 76, 39, 78, 80, 41, 82, 84, 43, 86, 88, 45]

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

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