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.

A078920 Upper triangle of Catalan Number Wall.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 5
8 3
9 1
10 1
11 14
12 14
13 4
14 1
15 1
16 42
17 84
18 30
19 5
20 1
21 1
22 132
23 594
24 330
25 55
26 6
27 1
28 1
29 429
30 4719
31 4719
32 1001
33 91
34 7
35 1
36 1
37 1430
38 40898
39 81796
40 26026
41 2548
42 140
43 8
44 1
45 1
46 4862
47 379236
48 1643356
49 884884
50 111384
51 5712
52 204
53 9
54 1
55 1
56 16796
57 3711916
58 37119160
59 37119160
60 6852768
61 395352
62 11628
63 285
64 10
65 1

List of values

[1, 1, 1, 1, 2, 1, 1, 5, 3, 1, 1, 14, 14, 4, 1, 1, 42, 84, 30, 5, 1, 1, 132, 594, 330, 55, 6, 1, 1, 429, 4719, 4719, 1001, 91, 7, 1, 1, 1430, 40898, 81796, 26026, 2548, 140, 8, 1, 1, 4862, 379236, 1643356, 884884, 111384, 5712, 204, 9, 1, 1, 16796, 3711916, 37119160, 37119160, 6852768, 395352, 11628, 285, 10, 1]