A127541 - cp's OEIS frontend

A127541 Triangle read by rows: T(n,k) is the number of ordered trees with n edges having k even-length branches starting at the root (0<=k<=n).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	2
6	8
7	5
8	1
9	24
10	15
11	3
12	75
13	46
14	10
15	1
16	243
17	148
18	34
19	4
20	808
21	489
22	116
23	16
24	1
25	2742
26	1652
27	402
28	61
29	5
30	9458
31	5678
32	1408
33	228
34	23
35	1
36	33062
37	19792
38	4982
39	847
40	97
41	6
42	116868
43	69798
44	17783
45	3138
46	393
47	31
48	1
49	417022
50	248577
51	63967
52	11627
53	1557
54	143
55	7

[1, 1, 1, 1, 3, 2, 8, 5, 1, 24, 15, 3, 75, 46, 10, 1, 243, 148, 34, 4, 808, 489, 116, 16, 1, 2742, 1652, 402, 61, 5, 9458, 5678, 1408, 228, 23, 1, 33062, 19792, 4982, 847, 97, 6, 116868, 69798, 17783, 3138, 393, 31, 1, 417022, 248577, 63967, 11627, 1557, 143, 7]

cp's OEIS Frontend

A127541 Triangle read by rows: T(n,k) is the number of ordered trees with n edges having k even-length branches starting at the root (0<=k<=n).

Table of values

List of values