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.

A101282 Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k valleys.

Table of values

n a(n)
1 2
2 5
3 1
4 14
5 7
6 1
7 42
8 36
9 11
10 1
11 132
12 165
13 80
14 16
15 1
16 429
17 715
18 484
19 155
20 22
21 1
22 1430
23 3003
24 2639
25 1183
26 273
27 29
28 1
29 4862
30 12376
31 13468
32 7840
33 2554
34 448
35 37
36 1
37 16796
38 50388
39 65688
40 47328
41 20124
42 5031
43 696
44 46
45 1
46 58786
47 203490
48 310080
49 267444
50 141219
51 46377
52 9230
53 1035
54 56
55 1

List of values

[2, 5, 1, 14, 7, 1, 42, 36, 11, 1, 132, 165, 80, 16, 1, 429, 715, 484, 155, 22, 1, 1430, 3003, 2639, 1183, 273, 29, 1, 4862, 12376, 13468, 7840, 2554, 448, 37, 1, 16796, 50388, 65688, 47328, 20124, 5031, 696, 46, 1, 58786, 203490, 310080, 267444, 141219, 46377, 9230, 1035, 56, 1]