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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.

A227741 Simple self-inverse permutation of natural numbers: List each block of A005811(n) numbers from A173318(n-1)+1 to A173318(n) in reverse order.

Table of values

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

List of values

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

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

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