A118920 - cp's OEIS frontend

A118920 Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n that cross the x-axis k times (n>=1, k>=0).

n	a(n)
1	2
2	4
3	2
4	10
5	8
6	2
7	28
8	28
9	12
10	2
11	84
12	96
13	54
14	16
15	2
16	264
17	330
18	220
19	88
20	20
21	2
22	858
23	1144
24	858
25	416
26	130
27	24
28	2
29	2860
30	4004
31	3276
32	1820
33	700
34	180
35	28
36	2
37	9724
38	14144
39	12376
40	7616
41	3400
42	1088
43	238
44	32
45	2
46	33592
47	50388
48	46512
49	31008
50	15504
51	5814
52	1596
53	304
54	36
55	2

[2, 4, 2, 10, 8, 2, 28, 28, 12, 2, 84, 96, 54, 16, 2, 264, 330, 220, 88, 20, 2, 858, 1144, 858, 416, 130, 24, 2, 2860, 4004, 3276, 1820, 700, 180, 28, 2, 9724, 14144, 12376, 7616, 3400, 1088, 238, 32, 2, 33592, 50388, 46512, 31008, 15504, 5814, 1596, 304, 36, 2]

cp's OEIS Frontend

A118920 Triangle read by rows: T(n,k) is the number of Grand Dyck paths of semilength n that cross the x-axis k times (n>=1, k>=0).

Table of values

List of values