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.

A072660 Size of the parenthesizations obtained with the global ranking/unranking scheme A072656-A072659.

Table of values

n a(n)
0 0
1 1
2 2
3 2
4 3
5 3
6 3
7 3
8 4
9 4
10 4
11 3
12 5
13 4
14 4
15 4
16 5
17 4
18 4
19 6
20 5
21 5
22 5
23 5
24 4
25 6
26 5
27 4
28 4
29 5
30 7
31 6
32 6
33 6
34 5
35 5
36 5
37 6
38 5
39 5
40 7
41 6
42 6
43 6
44 5
45 4
46 6
47 5
48 8
49 7
50 7
51 7
52 6
53 7
54 6
55 6
56 6
57 6
58 5
59 7
60 6
61 5
62 4
63 6
64 8
65 7
66 7
67 7
68 6
69 6
70 5
71 7
72 5
73 5
74 8
75 6
76 6
77 9
78 8
79 8
80 8
81 7
82 8
83 7
84 7
85 9
86 7
87 7
88 7
89 6
90 6
91 5
92 7
93 5
94 6
95 8
96 7
97 7
98 6
99 6
100 4
101 7
102 5
103 9
104 8

List of values

[0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 4, 4, 6, 5, 5, 5, 5, 4, 6, 5, 4, 4, 5, 7, 6, 6, 6, 5, 5, 5, 6, 5, 5, 7, 6, 6, 6, 5, 4, 6, 5, 8, 7, 7, 7, 6, 7, 6, 6, 6, 6, 5, 7, 6, 5, 4, 6, 8, 7, 7, 7, 6, 6, 5, 7, 5, 5, 8, 6, 6, 9, 8, 8, 8, 7, 8, 7, 7, 9, 7, 7, 7, 6, 6, 5, 7, 5, 6, 8, 7, 7, 6, 6, 4, 7, 5, 9, 8]