A091866 - cp's OEIS frontend

A091866 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having pyramid weight k.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	2
6	0
7	0
8	1
9	4
10	0
11	0
12	1
13	5
14	8
15	0
16	0
17	1
18	7
19	18
20	16
21	0
22	0
23	1
24	9
25	34
26	56
27	32
28	0
29	0
30	1
31	11
32	55
33	138
34	160
35	64
36	0
37	0
38	1
39	13
40	81
41	275
42	500
43	432
44	128
45	0
46	0
47	1
48	15
49	112
50	481
51	1205
52	1672
53	1120
54	256
55	0
56	0
57	1
58	17
59	148
60	770
61	2471
62	4797
63	5264
64	2816
65	512
66	0
67	0
68	1
69	19
70	189
71	1156
72	4536
73	11403
74	17738
75	15808
76	6912
77	1024

[1, 0, 1, 0, 0, 2, 0, 0, 1, 4, 0, 0, 1, 5, 8, 0, 0, 1, 7, 18, 16, 0, 0, 1, 9, 34, 56, 32, 0, 0, 1, 11, 55, 138, 160, 64, 0, 0, 1, 13, 81, 275, 500, 432, 128, 0, 0, 1, 15, 112, 481, 1205, 1672, 1120, 256, 0, 0, 1, 17, 148, 770, 2471, 4797, 5264, 2816, 512, 0, 0, 1, 19, 189, 1156, 4536, 11403, 17738, 15808, 6912, 1024]

cp's OEIS Frontend

A091866 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having pyramid weight k.

Table of values

List of values