A121460 - cp's OEIS frontend

A121460 Triangle read by rows: T(n,k) is the number of nondecreasing Dyck paths of semilength n, having k returns to the x-axis (1<=k<=n).

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	5
8	4
9	3
10	1
11	13
12	9
13	7
14	4
15	1
16	34
17	22
18	16
19	11
20	5
21	1
22	89
23	56
24	38
25	27
26	16
27	6
28	1
29	233
30	145
31	94
32	65
33	43
34	22
35	7
36	1
37	610
38	378
39	239
40	159
41	108
42	65
43	29
44	8
45	1
46	1597
47	988
48	617
49	398
50	267
51	173
52	94
53	37
54	9
55	1
56	4181
57	2585
58	1605
59	1015
60	665
61	440
62	267
63	131
64	46
65	10
66	1
67	10946
68	6766

[1, 1, 1, 2, 2, 1, 5, 4, 3, 1, 13, 9, 7, 4, 1, 34, 22, 16, 11, 5, 1, 89, 56, 38, 27, 16, 6, 1, 233, 145, 94, 65, 43, 22, 7, 1, 610, 378, 239, 159, 108, 65, 29, 8, 1, 1597, 988, 617, 398, 267, 173, 94, 37, 9, 1, 4181, 2585, 1605, 1015, 665, 440, 267, 131, 46, 10, 1, 10946, 6766]

cp's OEIS Frontend

A121460 Triangle read by rows: T(n,k) is the number of nondecreasing Dyck paths of semilength n, having k returns to the x-axis (1<=k<=n).

Table of values

List of values