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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.

A283971 a(n) = n except a(4*n + 2) = 2*n + 1.

Table of values

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

List of values

[0, 1, 1, 3, 4, 5, 3, 7, 8, 9, 5, 11, 12, 13, 7, 15, 16, 17, 9, 19, 20, 21, 11, 23, 24, 25, 13, 27, 28, 29, 15, 31, 32, 33, 17, 35, 36, 37, 19, 39, 40, 41, 21, 43, 44, 45, 23, 47, 48, 49, 25, 51, 52, 53, 27, 55, 56, 57, 29, 59, 60, 61, 31, 63, 64, 65, 33, 67]

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

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