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.

A128744 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having height of the first peak equal to k (1 <= k <= n).

Table of values

n a(n)
1 1
2 1
3 2
4 3
5 3
6 4
7 10
8 10
9 8
10 8
11 36
12 36
13 29
14 20
15 16
16 137
17 137
18 111
19 78
20 48
21 32
22 543
23 543
24 442
25 315
26 200
27 112
28 64
29 2219
30 2219
31 1813
32 1306
33 848
34 496
35 256
36 128
37 9285
38 9285
39 7609
40 5527
41 3649
42 2200
43 1200
44 576
45 256
46 39587
47 39587
48 32521
49 23779
50 15901
51 9802
52 5552
53 2848

List of values

[1, 1, 2, 3, 3, 4, 10, 10, 8, 8, 36, 36, 29, 20, 16, 137, 137, 111, 78, 48, 32, 543, 543, 442, 315, 200, 112, 64, 2219, 2219, 1813, 1306, 848, 496, 256, 128, 9285, 9285, 7609, 5527, 3649, 2200, 1200, 576, 256, 39587, 39587, 32521, 23779, 15901, 9802, 5552, 2848]