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.

A072789 The size of the parenthesizations obtained with the global ranking/unranking scheme presented in A072787-A072788.

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 3
6 3
7 4
8 3
9 4
10 4
11 4
12 4
13 3
14 4
15 5
16 4
17 5
18 4
19 4
20 4
21 5
22 5
23 5
24 4
25 4
26 5
27 5
28 5
29 5
30 5
31 5
32 5
33 5
34 5
35 5
36 4
37 5
38 4
39 6
40 5
41 5
42 6
43 5
44 5
45 6
46 5
47 6
48 6
49 5
50 5
51 5
52 6
53 6
54 5
55 6
56 5
57 6
58 6
59 6
60 6
61 6
62 6
63 6
64 6
65 5
66 5
67 5
68 5
69 5
70 6
71 6
72 6
73 6
74 7
75 5
76 6
77 5
78 6
79 6
80 6
81 7
82 6
83 6
84 7
85 5
86 6
87 7
88 7
89 6
90 6
91 6
92 5
93 6
94 7
95 6
96 7
97 7
98 6
99 6
100 7
101 7
102 7
103 6
104 5
105 5

List of values

[1, 2, 2, 3, 3, 3, 4, 3, 4, 4, 4, 4, 3, 4, 5, 4, 5, 4, 4, 4, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 5, 4, 6, 5, 5, 6, 5, 5, 6, 5, 6, 6, 5, 5, 5, 6, 6, 5, 6, 5, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 5, 6, 5, 6, 6, 6, 7, 6, 6, 7, 5, 6, 7, 7, 6, 6, 6, 5, 6, 7, 6, 7, 7, 6, 6, 7, 7, 7, 6, 5, 5]