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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.

A074147 (2n-1) odd numbers followed by 2n even numbers.

Table of values

n a(n)
1 1
2 2
3 4
4 3
5 5
6 7
7 6
8 8
9 10
10 12
11 9
12 11
13 13
14 15
15 17
16 14
17 16
18 18
19 20
20 22
21 24
22 19
23 21
24 23
25 25
26 27
27 29
28 31
29 26
30 28
31 30
32 32
33 34
34 36
35 38
36 40
37 33
38 35
39 37
40 39
41 41
42 43
43 45
44 47
45 49
46 42
47 44
48 46
49 48
50 50
51 52
52 54
53 56
54 58
55 60
56 51
57 53
58 55
59 57
60 59
61 61
62 63
63 65
64 67
65 69
66 71
67 62
68 64
69 66
70 68
71 70
72 72

List of values

[1, 2, 4, 3, 5, 7, 6, 8, 10, 12, 9, 11, 13, 15, 17, 14, 16, 18, 20, 22, 24, 19, 21, 23, 25, 27, 29, 31, 26, 28, 30, 32, 34, 36, 38, 40, 33, 35, 37, 39, 41, 43, 45, 47, 49, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 62, 64, 66, 68, 70, 72]

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

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