A114687 - cp's OEIS frontend

A114687 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 double rises (0 <= k <= n-1).

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

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

cp's OEIS Frontend

A114687 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 double rises (0 <= k <= n-1).

Table of values

List of values