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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.

A131000 Signature permutation of a Catalan automorphism: row 21 of A122287.

Table of values

n a(n)
0 0
1 1
2 3
3 2
4 7
5 8
6 6
7 4
8 5
9 18
10 17
11 20
12 22
13 21
14 16
15 19
16 14
17 9
18 10
19 15
20 11
21 12
22 13
23 50
24 49
25 48
26 46
27 45
28 55
29 54
30 61
31 64
32 63
33 57
34 62
35 59
36 58
37 47
38 44
39 53
40 60
41 56
42 42
43 51
44 37
45 23
46 24
47 38
48 25
49 26
50 27
51 43
52 52
53 39
54 28
55 29
56 40
57 30
58 32
59 31
60 41
61 33
62 34
63 36
64 35
65 147
66 148
67 146
68 142
69 143

List of values

[0, 1, 3, 2, 7, 8, 6, 4, 5, 18, 17, 20, 22, 21, 16, 19, 14, 9, 10, 15, 11, 12, 13, 50, 49, 48, 46, 45, 55, 54, 61, 64, 63, 57, 62, 59, 58, 47, 44, 53, 60, 56, 42, 51, 37, 23, 24, 38, 25, 26, 27, 43, 52, 39, 28, 29, 40, 30, 32, 31, 41, 33, 34, 36, 35, 147, 148, 146, 142, 143]

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

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