A090981 - cp's OEIS frontend

A090981 Triangle read by rows: T(n,k) = number of Schroeder paths of length 2n and having k ascents.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	1
6	1
7	11
8	9
9	1
10	1
11	26
12	46
13	16
14	1
15	1
16	57
17	180
18	130
19	25
20	1
21	1
22	120
23	603
24	750
25	295
26	36
27	1
28	1
29	247
30	1827
31	3507
32	2345
33	581
34	49
35	1
36	1
37	502
38	5164
39	14224
40	14518
41	6076
42	1036
43	64
44	1
45	1
46	1013
47	13878
48	52068
49	75558
50	48006
51	13776
52	1716
53	81
54	1
55	1
56	2036
57	35905
58	176430

[1, 1, 1, 1, 4, 1, 1, 11, 9, 1, 1, 26, 46, 16, 1, 1, 57, 180, 130, 25, 1, 1, 120, 603, 750, 295, 36, 1, 1, 247, 1827, 3507, 2345, 581, 49, 1, 1, 502, 5164, 14224, 14518, 6076, 1036, 64, 1, 1, 1013, 13878, 52068, 75558, 48006, 13776, 1716, 81, 1, 1, 2036, 35905, 176430]

cp's OEIS Frontend

A090981 Triangle read by rows: T(n,k) = number of Schroeder paths of length 2n and having k ascents.

Table of values

List of values