A126222 - cp's OEIS frontend

A126222 Triangle read by rows: T(n,k) is the number of 2-Motzkin paths (i.e., Motzkin paths with blue and red level steps) without red level steps on the x-axis, having length n and k level steps (0 <= k <= n).

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	0
7	4
8	0
9	1
10	2
11	0
12	11
13	0
14	1
15	0
16	15
17	0
18	26
19	0
20	1
21	5
22	0
23	69
24	0
25	57
26	0
27	1
28	0
29	56
30	0
31	252
32	0
33	120
34	0
35	1
36	14
37	0
38	364
39	0
40	804
41	0
42	247
43	0
44	1
45	0
46	210
47	0
48	1800
49	0
50	2349
51	0
52	502
53	0
54	1
55	42
56	0
57	1770
58	0
59	7515
60	0
61	6455
62	0
63	1013
64	0
65	1
66	0
67	792
68	0
69	11055
70	0
71	27940
72	0
73	16962
74	0

[1, 0, 1, 1, 0, 1, 0, 4, 0, 1, 2, 0, 11, 0, 1, 0, 15, 0, 26, 0, 1, 5, 0, 69, 0, 57, 0, 1, 0, 56, 0, 252, 0, 120, 0, 1, 14, 0, 364, 0, 804, 0, 247, 0, 1, 0, 210, 0, 1800, 0, 2349, 0, 502, 0, 1, 42, 0, 1770, 0, 7515, 0, 6455, 0, 1013, 0, 1, 0, 792, 0, 11055, 0, 27940, 0, 16962, 0]

cp's OEIS Frontend

A126222 Triangle read by rows: T(n,k) is the number of 2-Motzkin paths (i.e., Motzkin paths with blue and red level steps) without red level steps on the x-axis, having length n and k level steps (0 <= k <= n).

Table of values

List of values