A091869 - cp's OEIS frontend

A091869 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k peaks at even height.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	4
8	6
9	3
10	1
11	9
12	16
13	12
14	4
15	1
16	21
17	45
18	40
19	20
20	5
21	1
22	51
23	126
24	135
25	80
26	30
27	6
28	1
29	127
30	357
31	441
32	315
33	140
34	42
35	7
36	1
37	323
38	1016
39	1428
40	1176
41	630
42	224
43	56
44	8
45	1
46	835
47	2907
48	4572
49	4284
50	2646
51	1134
52	336
53	72
54	9
55	1
56	2188
57	8350
58	14535
59	15240
60	10710
61	5292
62	1890
63	480
64	90
65	10
66	1

[1, 1, 1, 2, 2, 1, 4, 6, 3, 1, 9, 16, 12, 4, 1, 21, 45, 40, 20, 5, 1, 51, 126, 135, 80, 30, 6, 1, 127, 357, 441, 315, 140, 42, 7, 1, 323, 1016, 1428, 1176, 630, 224, 56, 8, 1, 835, 2907, 4572, 4284, 2646, 1134, 336, 72, 9, 1, 2188, 8350, 14535, 15240, 10710, 5292, 1890, 480, 90, 10, 1]

cp's OEIS Frontend

A091869 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k peaks at even height.

Table of values

List of values