A129159 - cp's OEIS frontend

A129159 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having abscissa of the first return to the x-axis equal to 2k (1 <= k <= n).

n	a(n)
1	1
2	2
3	1
4	4
5	4
6	2
7	11
8	9
9	11
10	5
11	37
12	21
13	31
14	34
15	14
16	138
17	59
18	76
19	116
20	112
21	42
22	544
23	198
24	198
25	315
26	448
27	384
28	132
29	2220
30	743
31	599
32	825
33	1358
34	1758
35	1353
36	429
37	9286
38	2964
39	2091
40	2345
41	3724
42	5922
43	6963
44	4862
45	1430
46	39588
47	12251
48	8026
49	7604
50	10388
51	17304
52	25872

[1, 2, 1, 4, 4, 2, 11, 9, 11, 5, 37, 21, 31, 34, 14, 138, 59, 76, 116, 112, 42, 544, 198, 198, 315, 448, 384, 132, 2220, 743, 599, 825, 1358, 1758, 1353, 429, 9286, 2964, 2091, 2345, 3724, 5922, 6963, 4862, 1430, 39588, 12251, 8026, 7604, 10388, 17304, 25872]

cp's OEIS Frontend

A129159 Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having abscissa of the first return to the x-axis equal to 2k (1 <= k <= n).

Table of values

List of values