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.

A114656 Triangle read by rows: T(n,k) is the number of double rise-bicolored Dyck paths (double rises come in two colors; also called marked Dyck paths) of semilength n and having k peaks (1 <= k <= n).

Table of values

n a(n)
1 1
2 2
3 1
4 4
5 6
6 1
7 8
8 24
9 12
10 1
11 16
12 80
13 80
14 20
15 1
16 32
17 240
18 400
19 200
20 30
21 1
22 64
23 672
24 1680
25 1400
26 420
27 42
28 1
29 128
30 1792
31 6272
32 7840
33 3920
34 784
35 56
36 1
37 256
38 4608
39 21504
40 37632
41 28224
42 9408
43 1344
44 72
45 1
46 512
47 11520
48 69120
49 161280
50 169344
51 84672
52 20160
53 2160
54 90

List of values

[1, 2, 1, 4, 6, 1, 8, 24, 12, 1, 16, 80, 80, 20, 1, 32, 240, 400, 200, 30, 1, 64, 672, 1680, 1400, 420, 42, 1, 128, 1792, 6272, 7840, 3920, 784, 56, 1, 256, 4608, 21504, 37632, 28224, 9408, 1344, 72, 1, 512, 11520, 69120, 161280, 169344, 84672, 20160, 2160, 90]