A128753 - cp's OEIS frontend

A128753 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UDUDU's (n >= 0; 0 <= k <= n-2 for n >= 2).

n	a(n)
0	1
1	1
2	3
3	9
4	1
5	31
6	4
7	1
8	113
9	19
10	4
11	1
12	431
13	86
14	21
15	4
16	1
17	1697
18	393
19	101
20	23
21	4
22	1
23	6847
24	1800
25	492
26	116
27	25
28	4
29	1
30	28161
31	8279
32	2388
33	596
34	131
35	27
36	4
37	1
38	117631
39	38218
40	11603
41	3032
42	705
43	146
44	29
45	4
46	1
47	497665
48	177013
49	56407
50	15403
51	3732
52	819
53	161
54	31
55	4
56	1

[1, 1, 3, 9, 1, 31, 4, 1, 113, 19, 4, 1, 431, 86, 21, 4, 1, 1697, 393, 101, 23, 4, 1, 6847, 1800, 492, 116, 25, 4, 1, 28161, 8279, 2388, 596, 131, 27, 4, 1, 117631, 38218, 11603, 3032, 705, 146, 29, 4, 1, 497665, 177013, 56407, 15403, 3732, 819, 161, 31, 4, 1]

cp's OEIS Frontend

A128753 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UDUDU's (n >= 0; 0 <= k <= n-2 for n >= 2).

Table of values

List of values