A052253 - cp's OEIS frontend

A052253 Triangle T(n,k) (n >= 1, k >= 1) giving filtration of bigrading of Hopf algebra of rooted trees.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	3
8	2
9	1
10	8
11	5
12	4
13	2
14	1
15	16
16	13
17	9
18	6
19	3
20	1
21	41
22	28
23	21
24	13
25	8
26	3
27	1
28	98
29	71
30	49
31	33
32	20
33	10
34	4
35	1
36	250
37	174
38	121
39	79
40	50
41	27
42	13
43	4
44	1
45	631
46	445
47	304
48	201
49	127
50	74
51	38
52	16
53	5
54	1
55	1646
56	1137
57	776
58	510
59	325
60	192
61	106
62	49
63	19
64	5
65	1
66	4285
67	2974

[1, 1, 1, 2, 1, 1, 3, 3, 2, 1, 8, 5, 4, 2, 1, 16, 13, 9, 6, 3, 1, 41, 28, 21, 13, 8, 3, 1, 98, 71, 49, 33, 20, 10, 4, 1, 250, 174, 121, 79, 50, 27, 13, 4, 1, 631, 445, 304, 201, 127, 74, 38, 16, 5, 1, 1646, 1137, 776, 510, 325, 192, 106, 49, 19, 5, 1, 4285, 2974]

cp's OEIS Frontend

A052253 Triangle T(n,k) (n >= 1, k >= 1) giving filtration of bigrading of Hopf algebra of rooted trees.

Table of values

List of values