A126216 - cp's OEIS frontend

A126216 Triangle read by rows: T(n,k) is the number of Schroeder paths of semilength n containing exactly k peaks but no peaks at level one (n >= 1; 0 <= k <= n-1).

n	a(n)
1	1
2	2
3	1
4	5
5	5
6	1
7	14
8	21
9	9
10	1
11	42
12	84
13	56
14	14
15	1
16	132
17	330
18	300
19	120
20	20
21	1
22	429
23	1287
24	1485
25	825
26	225
27	27
28	1
29	1430
30	5005
31	7007
32	5005
33	1925
34	385
35	35
36	1
37	4862
38	19448
39	32032
40	28028
41	14014
42	4004
43	616
44	44
45	1
46	16796
47	75582
48	143208
49	148512
50	91728
51	34398
52	7644
53	936
54	54
55	1

[1, 2, 1, 5, 5, 1, 14, 21, 9, 1, 42, 84, 56, 14, 1, 132, 330, 300, 120, 20, 1, 429, 1287, 1485, 825, 225, 27, 1, 1430, 5005, 7007, 5005, 1925, 385, 35, 1, 4862, 19448, 32032, 28028, 14014, 4004, 616, 44, 1, 16796, 75582, 143208, 148512, 91728, 34398, 7644, 936, 54, 1]

cp's OEIS Frontend

A126216 Triangle read by rows: T(n,k) is the number of Schroeder paths of semilength n containing exactly k peaks but no peaks at level one (n >= 1; 0 <= k <= n-1).

Table of values

List of values