A167637 - cp's OEIS frontend

A167637 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having no ascents and no descents of length 1, and having k peaks at even level.

n	a(n)
0	1
1	0
2	0
3	1
4	1
5	0
6	0
7	1
8	1
9	2
10	2
11	0
12	1
13	3
14	3
15	1
16	5
17	8
18	4
19	0
20	5
21	13
22	12
23	6
24	1
25	15
26	32
27	27
28	8
29	0
30	21
31	59
32	61
33	33
34	10
35	1
36	51
37	134
38	147
39	76
40	15
41	0
42	85
43	267
44	327
45	208
46	75
47	15
48	1
49	188
50	584
51	771
52	528
53	186
54	26
55	0
56	344
57	1209
58	1734
59	1329
60	585
61	150
62	21
63	1
64	730
65	2608
66	4008
67	3344
68	1595
69	408
70	42
71	0

[1, 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 0, 1, 3, 3, 1, 5, 8, 4, 0, 5, 13, 12, 6, 1, 15, 32, 27, 8, 0, 21, 59, 61, 33, 10, 1, 51, 134, 147, 76, 15, 0, 85, 267, 327, 208, 75, 15, 1, 188, 584, 771, 528, 186, 26, 0, 344, 1209, 1734, 1329, 585, 150, 21, 1, 730, 2608, 4008, 3344, 1595, 408, 42, 0]

cp's OEIS Frontend

A167637 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having no ascents and no descents of length 1, and having k peaks at even level.

Table of values

List of values