A020474 - cp's OEIS frontend

A020474 A Motzkin triangle: a(n,k), n >= 2, 2 <= k <= n, = number of complete, strictly subdiagonal staircase functions.

n	a(n)
2	1
3	0
4	1
5	0
6	1
7	2
8	0
9	0
10	2
11	4
12	0
13	0
14	1
15	5
16	9
17	0
18	0
19	0
20	3
21	12
22	21
23	0
24	0
25	0
26	1
27	9
28	30
29	51
30	0
31	0
32	0
33	0
34	4
35	25
36	76
37	127
38	0
39	0
40	0
41	0
42	1
43	14
44	69
45	196
46	323
47	0
48	0
49	0
50	0
51	0
52	5
53	44
54	189
55	512
56	835
57	0
58	0
59	0
60	0
61	0
62	1
63	20
64	133
65	518
66	1353
67	2188
68	0
69	0
70	0
71	0
72	0
73	0
74	6
75	70
76	392
77	1422
78	3610
79	5798
80	0
81	0
82	0
83	0

[1, 0, 1, 0, 1, 2, 0, 0, 2, 4, 0, 0, 1, 5, 9, 0, 0, 0, 3, 12, 21, 0, 0, 0, 1, 9, 30, 51, 0, 0, 0, 0, 4, 25, 76, 127, 0, 0, 0, 0, 1, 14, 69, 196, 323, 0, 0, 0, 0, 0, 5, 44, 189, 512, 835, 0, 0, 0, 0, 0, 1, 20, 133, 518, 1353, 2188, 0, 0, 0, 0, 0, 0, 6, 70, 392, 1422, 3610, 5798, 0, 0, 0, 0]

cp's OEIS Frontend

A020474 A Motzkin triangle: a(n,k), n >= 2, 2 <= k <= n, = number of complete, strictly subdiagonal staircase functions.

Table of values

List of values