A091320 - cp's OEIS frontend

A091320 Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges and k leaves.

n	a(n)
1	1
2	2
3	1
4	4
5	7
6	1
7	8
8	30
9	16
10	1
11	16
12	104
13	122
14	30
15	1
16	32
17	320
18	660
19	365
20	50
21	1
22	64
23	912
24	2920
25	2875
26	903
27	77
28	1
29	128
30	2464
31	11312
32	17430
33	9856
34	1960
35	112
36	1
37	256
38	6400
39	39872
40	88592
41	78974
42	28560
43	3864
44	156
45	1
46	512
47	16128
48	130944
49	396480
50	512316
51	294042
52	73008
53	7074
54	210
55	1

[1, 2, 1, 4, 7, 1, 8, 30, 16, 1, 16, 104, 122, 30, 1, 32, 320, 660, 365, 50, 1, 64, 912, 2920, 2875, 903, 77, 1, 128, 2464, 11312, 17430, 9856, 1960, 112, 1, 256, 6400, 39872, 88592, 78974, 28560, 3864, 156, 1, 512, 16128, 130944, 396480, 512316, 294042, 73008, 7074, 210, 1]

cp's OEIS Frontend

A091320 Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges and k leaves.

Table of values

List of values