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.

A089852 Involution of natural numbers induced by Catalan automorphism *A089852 acting on the binary trees/parenthesizations encoded by A014486/A063171.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 6
5 5
6 4
7 7
8 8
9 16
10 19
11 15
12 12
13 13
14 14
15 11
16 9
17 17
18 18
19 10
20 20
21 21
22 22
23 44
24 47
25 53
26 56
27 60
28 43
29 52
30 40
31 31
32 32
33 41
34 34
35 35
36 36
37 42
38 51
39 39
40 30
41 33
42 37
43 28
44 23
45 45
46 46
47 24
48 48
49 49
50 50
51 38
52 29
53 25
54 54
55 55
56 26
57 57
58 58
59 59
60 27
61 61
62 62
63 63
64 64
65 128
66 131
67 137
68 140
69 144

List of values

[0, 1, 2, 3, 6, 5, 4, 7, 8, 16, 19, 15, 12, 13, 14, 11, 9, 17, 18, 10, 20, 21, 22, 44, 47, 53, 56, 60, 43, 52, 40, 31, 32, 41, 34, 35, 36, 42, 51, 39, 30, 33, 37, 28, 23, 45, 46, 24, 48, 49, 50, 38, 29, 25, 54, 55, 26, 57, 58, 59, 27, 61, 62, 63, 64, 128, 131, 137, 140, 144]

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

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