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.

A203717 A Catalan triangle by rows.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 3
6 1
7 1
8 8
9 4
10 1
11 1
12 20
13 15
14 5
15 1
16 1
17 50
18 53
19 21
20 6
21 1
22 1
23 126
24 182
25 84
26 28
27 7
28 1
29 1
30 322
31 616
32 326
33 120
34 36
35 8
36 1
37 1
38 834
39 2070
40 1242
41 495
42 165
43 45
44 9
45 1
46 1
47 2187
48 6930
49 4680
50 1997
51 715
52 220
53 55
54 10
55 1
56 1
57 5797
58 23166
59 17512
60 7942
61 3003
62 1001
63 286
64 66
65 11
66 1

List of values

[1, 1, 1, 1, 3, 1, 1, 8, 4, 1, 1, 20, 15, 5, 1, 1, 50, 53, 21, 6, 1, 1, 126, 182, 84, 28, 7, 1, 1, 322, 616, 326, 120, 36, 8, 1, 1, 834, 2070, 1242, 495, 165, 45, 9, 1, 1, 2187, 6930, 4680, 1997, 715, 220, 55, 10, 1, 1, 5797, 23166, 17512, 7942, 3003, 1001, 286, 66, 11, 1]