A339754 - cp's OEIS frontend

A339754 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k symmetric vertices (n >= 1, 1 <= k <= n).

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	3
7	0
8	2
9	6
10	6
11	0
12	4
13	12
14	16
15	10
16	0
17	8
18	24
19	40
20	40
21	20
22	0
23	20
24	60
25	104
26	120
27	90
28	35
29	0
30	50
31	150
32	270
33	350
34	330
35	210
36	70
37	0
38	140
39	420
40	768
41	1040
42	1080
43	840
44	448
45	126
46	0
47	392
48	1176
49	2184
50	3080
51	3468
52	3108
53	2128
54	1008
55	252

[1, 0, 2, 0, 2, 3, 0, 2, 6, 6, 0, 4, 12, 16, 10, 0, 8, 24, 40, 40, 20, 0, 20, 60, 104, 120, 90, 35, 0, 50, 150, 270, 350, 330, 210, 70, 0, 140, 420, 768, 1040, 1080, 840, 448, 126, 0, 392, 1176, 2184, 3080, 3468, 3108, 2128, 1008, 252]

cp's OEIS Frontend

A339754 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k symmetric vertices (n >= 1, 1 <= k <= n).

Table of values

List of values