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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.

A064429 a(n) = floor(n / 3) * 3 + sign(n mod 3) * (3 - n mod 3).

Table of values

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

List of values

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

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

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