cp's OEIS Frontend

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.

A218602 Simple self-inverse permutation of natural numbers: after zero, list each block of A213709(n) numbers in reverse order, from A218600(n) to A213710(n-1).

Table of values

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

List of values

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

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

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