A128718 - cp's OEIS frontend

A128718 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UU's (doublerises) (n >= 1; 0 <= k <= n-1).

n	a(n)
1	1
2	1
3	2
4	1
5	5
6	4
7	1
8	9
9	18
10	8
11	1
12	14
13	50
14	56
15	16
16	1
17	20
18	110
19	220
20	160
21	32
22	1
23	27
24	210
25	645
26	840
27	432
28	64
29	1
30	35
31	364
32	1575
33	3150
34	2912
35	1120
36	128
37	1
38	44
39	588
40	3388
41	9534
42	13552
43	9408
44	2816
45	256
46	1
47	54
48	900
49	6636
50	24822
51	49644
52	53088
53	28800
54	6912
55	512
56	1
57	65
58	1320
59	12090
60	57750
61	153426
62	231000
63	193440
64	84480
65	16640
66	1024

[1, 1, 2, 1, 5, 4, 1, 9, 18, 8, 1, 14, 50, 56, 16, 1, 20, 110, 220, 160, 32, 1, 27, 210, 645, 840, 432, 64, 1, 35, 364, 1575, 3150, 2912, 1120, 128, 1, 44, 588, 3388, 9534, 13552, 9408, 2816, 256, 1, 54, 900, 6636, 24822, 49644, 53088, 28800, 6912, 512, 1, 65, 1320, 12090, 57750, 153426, 231000, 193440, 84480, 16640, 1024]

cp's OEIS Frontend

A128718 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UU's (doublerises) (n >= 1; 0 <= k <= n-1).

Table of values

List of values