A091977 - cp's OEIS frontend

A091977 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k exterior pairs.

n	a(n)
0	1
1	1
2	2
3	4
4	1
5	8
6	5
7	1
8	16
9	18
10	7
11	1
12	32
13	56
14	34
15	9
16	1
17	64
18	160
19	138
20	55
21	11
22	1
23	128
24	432
25	500
26	275
27	81
28	13
29	1
30	256
31	1120
32	1672
33	1205
34	481
35	112
36	15
37	1
38	512
39	2816
40	5264
41	4797
42	2471
43	770
44	148
45	17
46	1
47	1024
48	6912
49	15808
50	17738
51	11403
52	4536
53	1156
54	189
55	19
56	1
57	2048
58	16640

[1, 1, 2, 4, 1, 8, 5, 1, 16, 18, 7, 1, 32, 56, 34, 9, 1, 64, 160, 138, 55, 11, 1, 128, 432, 500, 275, 81, 13, 1, 256, 1120, 1672, 1205, 481, 112, 15, 1, 512, 2816, 5264, 4797, 2471, 770, 148, 17, 1, 1024, 6912, 15808, 17738, 11403, 4536, 1156, 189, 19, 1, 2048, 16640]

cp's OEIS Frontend

A091977 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k exterior pairs.

Table of values

List of values