A121481 - cp's OEIS frontend

A121481 Triangle read by rows: T(n,k) is the number of nondecreasing Dyck paths of semilength n, having k peaks at odd level (0<=k<=n).

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	1
7	3
8	0
9	1
10	3
11	3
12	6
13	0
14	1
15	5
16	14
17	5
18	9
19	0
20	1
21	12
22	22
23	35
24	7
25	12
26	0
27	1
28	22
29	68
30	53
31	65
32	9
33	15
34	0
35	1
36	49
37	127
38	203
39	97
40	104
41	11
42	18
43	0
44	1
45	94
46	329
47	390
48	444
49	153
50	152
51	13
52	21
53	0
54	1
55	201
56	664
57	1157
58	873
59	816
60	221
61	209
62	15
63	24
64	0
65	1
66	396
67	1576
68	2456
69	2925
70	1627
71	1345

[1, 0, 1, 1, 0, 1, 1, 3, 0, 1, 3, 3, 6, 0, 1, 5, 14, 5, 9, 0, 1, 12, 22, 35, 7, 12, 0, 1, 22, 68, 53, 65, 9, 15, 0, 1, 49, 127, 203, 97, 104, 11, 18, 0, 1, 94, 329, 390, 444, 153, 152, 13, 21, 0, 1, 201, 664, 1157, 873, 816, 221, 209, 15, 24, 0, 1, 396, 1576, 2456, 2925, 1627, 1345]

cp's OEIS Frontend

A121481 Triangle read by rows: T(n,k) is the number of nondecreasing Dyck paths of semilength n, having k peaks at odd level (0<=k<=n).

Table of values

List of values