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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.

A130923 Signature permutation of a Catalan automorphism: Inverse FORK-transform of automorphism *A120705.

Table of values

n a(n)
0 0
1 1
2 3
3 2
4 7
5 8
6 5
7 4
8 6
9 17
10 18
11 20
12 21
13 22
14 12
15 11
16 13
17 9
18 10
19 15
20 14
21 16
22 19
23 45
24 46
25 48
26 49
27 50
28 54
29 55
30 57
31 58
32 59
33 61
34 62
35 63
36 64
37 31
38 32
39 29
40 28
41 30
42 34
43 33
44 35
45 27
46 24
47 36
48 23
49 26
50 25
51 40
52 39
53 41
54 37
55 38
56 43
57 42
58 44
59 47
60 52
61 51
62 53
63 56
64 60
65 129
66 130
67 132
68 133
69 134

List of values

[0, 1, 3, 2, 7, 8, 5, 4, 6, 17, 18, 20, 21, 22, 12, 11, 13, 9, 10, 15, 14, 16, 19, 45, 46, 48, 49, 50, 54, 55, 57, 58, 59, 61, 62, 63, 64, 31, 32, 29, 28, 30, 34, 33, 35, 27, 24, 36, 23, 26, 25, 40, 39, 41, 37, 38, 43, 42, 44, 47, 52, 51, 53, 56, 60, 129, 130, 132, 133, 134]

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

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