A297672 - cp's OEIS frontend

A297672 Array with four columns read by rows: T(n,k) = number of n step walks in the first octant on a square lattice with last step being right (k=1), left (k=2), up (k=3) or down (k=4).

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	1
7	1
8	0
9	3
10	1
11	1
12	1
13	6
14	6
15	6
16	2
17	20
18	10
19	10
20	10
21	50
22	50
23	50
24	25
25	175
26	105
27	105
28	105
29	490
30	490
31	490
32	294
33	1764
34	1176
35	1176
36	1176
37	5292
38	5292
39	5292
40	3528
41	19404
42	13860
43	13860

[1, 0, 0, 0, 1, 1, 1, 0, 3, 1, 1, 1, 6, 6, 6, 2, 20, 10, 10, 10, 50, 50, 50, 25, 175, 105, 105, 105, 490, 490, 490, 294, 1764, 1176, 1176, 1176, 5292, 5292, 5292, 3528, 19404, 13860, 13860]

cp's OEIS Frontend

A297672 Array with four columns read by rows: T(n,k) = number of n step walks in the first octant on a square lattice with last step being right (k=1), left (k=2), up (k=3) or down (k=4).

Table of values

List of values