A152659 - cp's OEIS frontend

A152659 Triangle read by rows: T(n,k) is the number of lattice paths from (0,0) to (n,n) with steps E=(1,0) and N=(0,1) and having k turns (NE or EN) (1<=k<=2n-1).

n	a(n)
1	2
2	2
3	2
4	2
5	2
6	4
7	8
8	4
9	2
10	2
11	6
12	18
13	18
14	18
15	6
16	2
17	2
18	8
19	32
20	48
21	72
22	48
23	32
24	8
25	2
26	2
27	10
28	50
29	100
30	200
31	200
32	200
33	100
34	50
35	10
36	2
37	2
38	12
39	72
40	180
41	450
42	600
43	800
44	600
45	450
46	180
47	72
48	12
49	2
50	2
51	14
52	98
53	294
54	882
55	1470
56	2450
57	2450
58	2450
59	1470
60	882
61	294
62	98
63	14
64	2
65	2
66	16
67	128
68	448

[2, 2, 2, 2, 2, 4, 8, 4, 2, 2, 6, 18, 18, 18, 6, 2, 2, 8, 32, 48, 72, 48, 32, 8, 2, 2, 10, 50, 100, 200, 200, 200, 100, 50, 10, 2, 2, 12, 72, 180, 450, 600, 800, 600, 450, 180, 72, 12, 2, 2, 14, 98, 294, 882, 1470, 2450, 2450, 2450, 1470, 882, 294, 98, 14, 2, 2, 16, 128, 448]

cp's OEIS Frontend

A152659 Triangle read by rows: T(n,k) is the number of lattice paths from (0,0) to (n,n) with steps E=(1,0) and N=(0,1) and having k turns (NE or EN) (1<=k<=2n-1).

Table of values

List of values