A182886 - cp's OEIS frontend

A182886 Triangle read by rows: T(n,k) is the number of weighted lattice paths in L_n having k (1,0)-steps. These are paths that start at (0,0), end on the horizontal axis and whose steps are of the following four kinds: a (1,0)-step with weight 1; a (1,0)-step with weight 2; a (1,1)-step with weight 2; a (1,-1)-step with weight 1. The weight of a path is the sum of the weights of its steps.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	2
7	0
8	2
9	1
10	0
11	6
12	1
13	3
14	1
15	0
16	6
17	12
18	3
19	4
20	1
21	6
22	0
23	24
24	21
25	6
26	5
27	1
28	0
29	30
30	12
31	60
32	34
33	10
34	6
35	1
36	0
37	30
38	90
39	60
40	121
41	52
42	15
43	7
44	1
45	20
46	0
47	180
48	215
49	76
50	21
51	8
52	1
53	0
54	140
55	90
56	630
57	540
58	421
59	351
60	107
61	28
62	9
63	1
64	0
65	140
66	560
67	630
68	1710
69	1176
70	846
71	539
72	146
73	36
74	10
75	1

[1, 0, 1, 0, 1, 1, 2, 0, 2, 1, 0, 6, 1, 3, 1, 0, 6, 12, 3, 4, 1, 6, 0, 24, 21, 6, 5, 1, 0, 30, 12, 60, 34, 10, 6, 1, 0, 30, 90, 60, 121, 52, 15, 7, 1, 20, 0, 180, 215, 76, 21, 8, 1, 0, 140, 90, 630, 540, 421, 351, 107, 28, 9, 1, 0, 140, 560, 630, 1710, 1176, 846, 539, 146, 36, 10, 1]

cp's OEIS Frontend

Table of values

List of values